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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="ISO 8601 combined date and time without timezone."><title>NaiveDateTime in chrono - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-46132b98.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="chrono" data-themes="" data-resource-suffix="" data-rustdoc-version="1.85.0 (4d91de4e4 2025-02-17)" data-channel="1.85.0" data-search-js="search-75f5ac3e.js" data-settings-js="settings-0f613d39.js" ><script src="../static.files/storage-59e33391.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../chrono/index.html">chrono</a><span class="version">0.4.40</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Naive<wbr>Date<wbr>Time</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#example" title="Example">Example</a></li></ul><h3><a href="#fields">Fields</a></h3><ul class="block structfield"><li><a href="#structfield.date" title="date">date</a></li><li><a href="#structfield.time" title="time">time</a></li></ul><h3><a href="#implementations">Associated Constants</a></h3><ul class="block associatedconstant"><li><a href="#associatedconstant.MAX" title="MAX">MAX</a></li><li><a href="#associatedconstant.MIN" title="MIN">MIN</a></li><li><a href="#associatedconstant.UNIX_EPOCH" title="UNIX_EPOCH">UNIX_EPOCH</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.and_local_timezone" title="and_local_timezone">and_local_timezone</a></li><li><a href="#method.and_utc" title="and_utc">and_utc</a></li><li><a href="#method.checked_add_days" title="checked_add_days">checked_add_days</a></li><li><a href="#method.checked_add_months" title="checked_add_months">checked_add_months</a></li><li><a href="#method.checked_add_offset" title="checked_add_offset">checked_add_offset</a></li><li><a href="#method.checked_add_signed" title="checked_add_signed">checked_add_signed</a></li><li><a href="#method.checked_sub_days" title="checked_sub_days">checked_sub_days</a></li><li><a href="#method.checked_sub_months" title="checked_sub_months">checked_sub_months</a></li><li><a href="#method.checked_sub_offset" title="checked_sub_offset">checked_sub_offset</a></li><li><a href="#method.checked_sub_signed" title="checked_sub_signed">checked_sub_signed</a></li><li><a href="#method.date" title="date">date</a></li><li><a href="#method.format" title="format">format</a></li><li><a href="#method.format_with_items" title="format_with_items">format_with_items</a></li><li><a href="#method.from_timestamp" title="from_timestamp">from_timestamp</a></li><li><a href="#method.from_timestamp_micros" title="from_timestamp_micros">from_timestamp_micros</a></li><li><a href="#method.from_timestamp_millis" title="from_timestamp_millis">from_timestamp_millis</a></li><li><a href="#method.from_timestamp_nanos" title="from_timestamp_nanos">from_timestamp_nanos</a></li><li><a href="#method.from_timestamp_opt" title="from_timestamp_opt">from_timestamp_opt</a></li><li><a href="#method.new" title="new">new</a></li><li><a href="#method.overflowing_add_offset" title="overflowing_add_offset">overflowing_add_offset</a></li><li><a href="#method.overflowing_sub_offset" title="overflowing_sub_offset">overflowing_sub_offset</a></li><li><a href="#method.parse_and_remainder" title="parse_and_remainder">parse_and_remainder</a></li><li><a href="#method.parse_from_str" title="parse_from_str">parse_from_str</a></li><li><a href="#method.signed_duration_since" title="signed_duration_since">signed_duration_since</a></li><li><a href="#method.time" title="time">time</a></li><li><a href="#method.timestamp" title="timestamp">timestamp</a></li><li><a href="#method.timestamp_micros" title="timestamp_micros">timestamp_micros</a></li><li><a href="#method.timestamp_millis" title="timestamp_millis">timestamp_millis</a></li><li><a href="#method.timestamp_nanos" title="timestamp_nanos">timestamp_nanos</a></li><li><a href="#method.timestamp_nanos_opt" title="timestamp_nanos_opt">timestamp_nanos_opt</a></li><li><a href="#method.timestamp_subsec_micros" title="timestamp_subsec_micros">timestamp_subsec_micros</a></li><li><a href="#method.timestamp_subsec_millis" title="timestamp_subsec_millis">timestamp_subsec_millis</a></li><li><a href="#method.timestamp_subsec_nanos" title="timestamp_subsec_nanos">timestamp_subsec_nanos</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Add%3CDays%3E-for-NaiveDateTime" title="Add<Days>">Add<Days></a></li><li><a href="#impl-Add%3CDuration%3E-for-NaiveDateTime" title="Add<Duration>">Add<Duration></a></li><li><a href="#impl-Add%3CFixedOffset%3E-for-NaiveDateTime" title="Add<FixedOffset>">Add<FixedOffset></a></li><li><a href="#impl-Add%3CMonths%3E-for-NaiveDateTime" title="Add<Months>">Add<Months></a></li><li><a href="#impl-Add%3CTimeDelta%3E-for-NaiveDateTime" title="Add<TimeDelta>">Add<TimeDelta></a></li><li><a href="#impl-AddAssign%3CDuration%3E-for-NaiveDateTime" title="AddAssign<Duration>">AddAssign<Duration></a></li><li><a href="#impl-AddAssign%3CTimeDelta%3E-for-NaiveDateTime" title="AddAssign<TimeDelta>">AddAssign<TimeDelta></a></li><li><a href="#impl-Clone-for-NaiveDateTime" title="Clone">Clone</a></li><li><a href="#impl-Copy-for-NaiveDateTime" title="Copy">Copy</a></li><li><a href="#impl-Datelike-for-NaiveDateTime" title="Datelike">Datelike</a></li><li><a href="#impl-Debug-for-NaiveDateTime" title="Debug">Debug</a></li><li><a href="#impl-Default-for-NaiveDateTime" title="Default">Default</a></li><li><a href="#impl-Deserialize%3C'de%3E-for-NaiveDateTime" title="Deserialize<'de>">Deserialize<'de></a></li><li><a href="#impl-Display-for-NaiveDateTime" title="Display">Display</a></li><li><a href="#impl-DurationRound-for-NaiveDateTime" title="DurationRound">DurationRound</a></li><li><a href="#impl-Eq-for-NaiveDateTime" title="Eq">Eq</a></li><li><a href="#impl-From%3CNaiveDate%3E-for-NaiveDateTime" title="From<NaiveDate>">From<NaiveDate></a></li><li><a href="#impl-From%3CNaiveDateTime%3E-for-NaiveDate" title="From<NaiveDateTime>">From<NaiveDateTime></a></li><li><a href="#impl-FromStr-for-NaiveDateTime" title="FromStr">FromStr</a></li><li><a href="#impl-Hash-for-NaiveDateTime" title="Hash">Hash</a></li><li><a href="#impl-Ord-for-NaiveDateTime" title="Ord">Ord</a></li><li><a href="#impl-PartialEq-for-NaiveDateTime" title="PartialEq">PartialEq</a></li><li><a href="#impl-PartialOrd-for-NaiveDateTime" title="PartialOrd">PartialOrd</a></li><li><a href="#impl-Serialize-for-NaiveDateTime" title="Serialize">Serialize</a></li><li><a href="#impl-StructuralPartialEq-for-NaiveDateTime" title="StructuralPartialEq">StructuralPartialEq</a></li><li><a href="#impl-Sub-for-NaiveDateTime" title="Sub">Sub</a></li><li><a href="#impl-Sub%3CDays%3E-for-NaiveDateTime" title="Sub<Days>">Sub<Days></a></li><li><a href="#impl-Sub%3CDuration%3E-for-NaiveDateTime" title="Sub<Duration>">Sub<Duration></a></li><li><a href="#impl-Sub%3CFixedOffset%3E-for-NaiveDateTime" title="Sub<FixedOffset>">Sub<FixedOffset></a></li><li><a href="#impl-Sub%3CMonths%3E-for-NaiveDateTime" title="Sub<Months>">Sub<Months></a></li><li><a href="#impl-Sub%3CTimeDelta%3E-for-NaiveDateTime" title="Sub<TimeDelta>">Sub<TimeDelta></a></li><li><a href="#impl-SubAssign%3CDuration%3E-for-NaiveDateTime" title="SubAssign<Duration>">SubAssign<Duration></a></li><li><a href="#impl-SubAssign%3CTimeDelta%3E-for-NaiveDateTime" title="SubAssign<TimeDelta>">SubAssign<TimeDelta></a></li><li><a href="#impl-Timelike-for-NaiveDateTime" title="Timelike">Timelike</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-NaiveDateTime" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-NaiveDateTime" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Send-for-NaiveDateTime" title="Send">Send</a></li><li><a href="#impl-Sync-for-NaiveDateTime" title="Sync">Sync</a></li><li><a href="#impl-Unpin-for-NaiveDateTime" title="Unpin">Unpin</a></li><li><a href="#impl-UnwindSafe-for-NaiveDateTime" title="UnwindSafe">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow<T>">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut<T>">BorrowMut<T></a></li><li><a href="#impl-CloneToUninit-for-T" title="CloneToUninit">CloneToUninit</a></li><li><a href="#impl-DeserializeOwned-for-T" title="DeserializeOwned">DeserializeOwned</a></li><li><a href="#impl-From%3CT%3E-for-T" title="From<T>">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into<U>">Into<U></a></li><li><a href="#impl-SubsecRound-for-T" title="SubsecRound">SubsecRound</a></li><li><a href="#impl-ToOwned-for-T" title="ToOwned">ToOwned</a></li><li><a href="#impl-ToString-for-T" title="ToString">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom<U>">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto<U>">TryInto<U></a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate chrono</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">chrono</a></span><h1>Struct <span class="struct">NaiveDateTime</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/chrono/naive/datetime/mod.rs.html#76-79">Source</a> </span></div><pre class="rust item-decl"><code>pub struct NaiveDateTime {
date: <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a>,
time: <a class="struct" href="struct.NaiveTime.html" title="struct chrono::NaiveTime">NaiveTime</a>,
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>ISO 8601 combined date and time without timezone.</p>
<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
<p><code>NaiveDateTime</code> is commonly created from <a href="struct.NaiveDate.html" title="struct chrono::NaiveDate"><code>NaiveDate</code></a>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>).unwrap();</code></pre></div>
<p>You can use typical <a href="trait.Datelike.html" title="trait chrono::Datelike">date-like</a> and <a href="trait.Timelike.html" title="trait chrono::Timelike">time-like</a> methods,
provided that relevant traits are in the scope.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, Timelike, Weekday};
<span class="macro">assert_eq!</span>(dt.weekday(), Weekday::Fri);
<span class="macro">assert_eq!</span>(dt.num_seconds_from_midnight(), <span class="number">33011</span>);</code></pre></div>
</div></details><h2 id="fields" class="fields section-header">Fields<a href="#fields" class="anchor">§</a></h2><span id="structfield.date" class="structfield section-header"><a href="#structfield.date" class="anchor field">§</a><code>date: <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a></code></span><span id="structfield.time" class="structfield section-header"><a href="#structfield.time" class="anchor field">§</a><code>time: <a class="struct" href="struct.NaiveTime.html" title="struct chrono::NaiveTime">NaiveTime</a></code></span><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#81-950">Source</a><a href="#impl-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedconstant.MIN" class="associatedconstant"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#942">Source</a><h4 class="code-header">pub const <a href="#associatedconstant.MIN" class="constant">MIN</a>: Self</h4></section></summary><div class="docblock"><p>The minimum possible <code>NaiveDateTime</code>.</p>
</div></details><details class="toggle" open><summary><section id="associatedconstant.MAX" class="associatedconstant"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#945">Source</a><h4 class="code-header">pub const <a href="#associatedconstant.MAX" class="constant">MAX</a>: Self</h4></section></summary><div class="docblock"><p>The maximum possible <code>NaiveDateTime</code>.</p>
</div></details><details class="toggle" open><summary><section id="associatedconstant.UNIX_EPOCH" class="associatedconstant"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#948-949">Source</a><h4 class="code-header">pub const <a href="#associatedconstant.UNIX_EPOCH" class="constant">UNIX_EPOCH</a>: Self</h4></section></summary><div class="docblock"><p>The Unix Epoch, 1970-01-01 00:00:00.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#99-101">Source</a><h4 class="code-header">pub const fn <a href="#method.new" class="fn">new</a>(date: <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a>, time: <a class="struct" href="struct.NaiveTime.html" title="struct chrono::NaiveTime">NaiveTime</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> from date and time components.
Equivalent to <a href="./struct.NaiveDate.html#method.and_time"><code>date.and_time(time)</code></a>
and many other helper constructors on <code>NaiveDate</code>.</p>
<h5 id="example-1"><a class="doc-anchor" href="#example-1">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveDateTime, NaiveTime};
<span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">3</span>).unwrap();
<span class="kw">let </span>t = NaiveTime::from_hms_milli_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>).unwrap();
<span class="kw">let </span>dt = NaiveDateTime::new(d, t);
<span class="macro">assert_eq!</span>(dt.date(), d);
<span class="macro">assert_eq!</span>(dt.time(), t);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.from_timestamp" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#122-126">Source</a><h4 class="code-header">pub const fn <a href="#method.from_timestamp" class="fn">from_timestamp</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>DateTime::from_timestamp</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka “UNIX timestamp”)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>For a non-naive version of this function see <a href="trait.TimeZone.html#method.timestamp" title="method chrono::TimeZone::timestamp"><code>TimeZone::timestamp</code></a>.</p>
<p>The nanosecond part can exceed 1,000,000,000 in order to represent a
<a href="struct.NaiveTime.html#leap-second-handling" title="struct chrono::NaiveTime">leap second</a>, but only when <code>secs % 60 == 59</code>.
(The true “UNIX timestamp” cannot represent a leap second unambiguously.)</p>
<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
<p>Panics if the number of seconds would be out of range for a <code>NaiveDateTime</code> (more than
ca. 262,000 years away from common era), and panics on an invalid nanosecond (2 seconds or
more).</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.from_timestamp_millis" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#139-141">Source</a><h4 class="code-header">pub const fn <a href="#method.from_timestamp_millis" class="fn">from_timestamp_millis</a>(millis: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>DateTime::from_timestamp_millis</code> instead</span></div></span></summary><div class="docblock"><p>Creates a new <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a> from milliseconds since the UNIX epoch.</p>
<p>The UNIX epoch starts on midnight, January 1, 1970, UTC.</p>
<h5 id="errors"><a class="doc-anchor" href="#errors">§</a>Errors</h5>
<p>Returns <code>None</code> if the number of milliseconds would be out of range for a <code>NaiveDateTime</code>
(more than ca. 262,000 years away from common era)</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.from_timestamp_micros" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#154-158">Source</a><h4 class="code-header">pub const fn <a href="#method.from_timestamp_micros" class="fn">from_timestamp_micros</a>(micros: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>DateTime::from_timestamp_micros</code> instead</span></div></span></summary><div class="docblock"><p>Creates a new <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a> from microseconds since the UNIX epoch.</p>
<p>The UNIX epoch starts on midnight, January 1, 1970, UTC.</p>
<h5 id="errors-1"><a class="doc-anchor" href="#errors-1">§</a>Errors</h5>
<p>Returns <code>None</code> if the number of microseconds would be out of range for a <code>NaiveDateTime</code>
(more than ca. 262,000 years away from common era)</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.from_timestamp_nanos" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#171-175">Source</a><h4 class="code-header">pub const fn <a href="#method.from_timestamp_nanos" class="fn">from_timestamp_nanos</a>(nanos: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>DateTime::from_timestamp_nanos</code> instead</span></div></span></summary><div class="docblock"><p>Creates a new <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a> from nanoseconds since the UNIX epoch.</p>
<p>The UNIX epoch starts on midnight, January 1, 1970, UTC.</p>
<h5 id="errors-2"><a class="doc-anchor" href="#errors-2">§</a>Errors</h5>
<p>Returns <code>None</code> if the number of nanoseconds would be out of range for a <code>NaiveDateTime</code>
(more than ca. 262,000 years away from common era)</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.from_timestamp_opt" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#194-196">Source</a><h4 class="code-header">pub const fn <a href="#method.from_timestamp_opt" class="fn">from_timestamp_opt</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>DateTime::from_timestamp</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka “UNIX timestamp”)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>The nanosecond part can exceed 1,000,000,000 in order to represent a
<a href="struct.NaiveTime.html#leap-second-handling" title="struct chrono::NaiveTime">leap second</a>, but only when <code>secs % 60 == 59</code>.
(The true “UNIX timestamp” cannot represent a leap second unambiguously.)</p>
<h5 id="errors-3"><a class="doc-anchor" href="#errors-3">§</a>Errors</h5>
<p>Returns <code>None</code> if the number of seconds would be out of range for a <code>NaiveDateTime</code> (more
than ca. 262,000 years away from common era), and panics on an invalid nanosecond
(2 seconds or more).</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.parse_from_str" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#285-289">Source</a><h4 class="code-header">pub fn <a href="#method.parse_from_str" class="fn">parse_from_str</a>(s: &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>, fmt: &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>) -> <a class="type" href="format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Parses a string with the specified format string and returns a new <code>NaiveDateTime</code>.
See the <a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<h5 id="example-2"><a class="doc-anchor" href="#example-2">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveDateTime};
<span class="kw">let </span>parse_from_str = NaiveDateTime::parse_from_str;
<span class="macro">assert_eq!</span>(
parse_from_str(<span class="string">"2015-09-05 23:56:04"</span>, <span class="string">"%Y-%m-%d %H:%M:%S"</span>),
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).unwrap().and_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
parse_from_str(<span class="string">"5sep2015pm012345.6789"</span>, <span class="string">"%d%b%Y%p%I%M%S%.f"</span>),
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>)
.unwrap()
.and_hms_micro_opt(<span class="number">13</span>, <span class="number">23</span>, <span class="number">45</span>, <span class="number">678_900</span>)
.unwrap())
);</code></pre></div>
<p>Offset is ignored for the purpose of parsing.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(
parse_from_str(<span class="string">"2014-5-17T12:34:56+09:30"</span>, <span class="string">"%Y-%m-%dT%H:%M:%S%z"</span>),
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">17</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);</code></pre></div>
<p><a href="./struct.NaiveTime.html#leap-second-handling">Leap seconds</a> are correctly handled by
treating any time of the form <code>hh:mm:60</code> as a leap second.
(This equally applies to the formatting, so the round trip is possible.)</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(
parse_from_str(<span class="string">"2015-07-01 08:59:60.123"</span>, <span class="string">"%Y-%m-%d %H:%M:%S%.f"</span>),
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>)
.unwrap()
.and_hms_milli_opt(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_123</span>)
.unwrap())
);</code></pre></div>
<p>Missing seconds are assumed to be zero,
but out-of-bound times or insufficient fields are errors otherwise.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(
parse_from_str(<span class="string">"94/9/4 7:15"</span>, <span class="string">"%y/%m/%d %H:%M"</span>),
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(<span class="number">1994</span>, <span class="number">9</span>, <span class="number">4</span>).unwrap().and_hms_opt(<span class="number">7</span>, <span class="number">15</span>, <span class="number">0</span>).unwrap())
);
<span class="macro">assert!</span>(parse_from_str(<span class="string">"04m33s"</span>, <span class="string">"%Mm%Ss"</span>).is_err());
<span class="macro">assert!</span>(parse_from_str(<span class="string">"94/9/4 12"</span>, <span class="string">"%y/%m/%d %H"</span>).is_err());
<span class="macro">assert!</span>(parse_from_str(<span class="string">"94/9/4 17:60"</span>, <span class="string">"%y/%m/%d %H:%M"</span>).is_err());
<span class="macro">assert!</span>(parse_from_str(<span class="string">"94/9/4 24:00:00"</span>, <span class="string">"%y/%m/%d %H:%M:%S"</span>).is_err());</code></pre></div>
<p>All parsed fields should be consistent to each other, otherwise it’s an error.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>fmt = <span class="string">"%Y-%m-%d %H:%M:%S = UNIX timestamp %s"</span>;
<span class="macro">assert!</span>(parse_from_str(<span class="string">"2001-09-09 01:46:39 = UNIX timestamp 999999999"</span>, fmt).is_ok());
<span class="macro">assert!</span>(parse_from_str(<span class="string">"1970-01-01 00:00:00 = UNIX timestamp 1"</span>, fmt).is_err());</code></pre></div>
<p>Years before 1 BCE or after 9999 CE, require an initial sign</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code> <span class="kw">let </span>fmt = <span class="string">"%Y-%m-%d %H:%M:%S"</span>;
<span class="macro">assert!</span>(parse_from_str(<span class="string">"10000-09-09 01:46:39"</span>, fmt).is_err());
<span class="macro">assert!</span>(parse_from_str(<span class="string">"+10000-09-09 01:46:39"</span>, fmt).is_ok());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.parse_and_remainder" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#313-317">Source</a><h4 class="code-header">pub fn <a href="#method.parse_and_remainder" class="fn">parse_and_remainder</a><'a>(
s: &'a <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>,
fmt: &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>,
) -> <a class="type" href="format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><(<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>, &'a <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>)></h4></section></summary><div class="docblock"><p>Parses a string with the specified format string and returns a new <code>NaiveDateTime</code>, and a
slice with the remaining portion of the string.
See the <a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<p>Similar to <a href="#method.parse_from_str"><code>parse_from_str</code></a>.</p>
<h5 id="example-3"><a class="doc-anchor" href="#example-3">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>(datetime, remainder) = NaiveDateTime::parse_and_remainder(
<span class="string">"2015-02-18 23:16:09 trailing text"</span>,
<span class="string">"%Y-%m-%d %H:%M:%S"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
datetime,
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">2</span>, <span class="number">18</span>).unwrap().and_hms_opt(<span class="number">23</span>, <span class="number">16</span>, <span class="number">9</span>).unwrap()
);
<span class="macro">assert_eq!</span>(remainder, <span class="string">" trailing text"</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.date" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#330-332">Source</a><h4 class="code-header">pub const fn <a href="#method.date" class="fn">date</a>(&self) -> <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a></h4></section></summary><div class="docblock"><p>Retrieves a date component.</p>
<h5 id="example-4"><a class="doc-anchor" href="#example-4">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveDate;
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.date(), NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.time" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#345-347">Source</a><h4 class="code-header">pub const fn <a href="#method.time" class="fn">time</a>(&self) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::NaiveTime">NaiveTime</a></h4></section></summary><div class="docblock"><p>Retrieves a time component.</p>
<h5 id="example-5"><a class="doc-anchor" href="#example-5">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveTime};
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.time(), NaiveTime::from_hms_opt(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>).unwrap());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#356-358">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp" class="fn">timestamp</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of non-leap seconds since the midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true “UNIX timestamp” would count seconds since the midnight <em>UTC</em> on the epoch.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_millis" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#367-369">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_millis" class="fn">timestamp_millis</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp_millis()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of non-leap <em>milliseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true “UNIX timestamp” would count seconds since the midnight <em>UTC</em> on the epoch.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_micros" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#378-380">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_micros" class="fn">timestamp_micros</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp_micros()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of non-leap <em>microseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true “UNIX timestamp” would count seconds since the midnight <em>UTC</em> on the epoch.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_nanos" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#398-400">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_nanos" class="fn">timestamp_nanos</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.31: use <code>.and_utc().timestamp_nanos_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of non-leap <em>nanoseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true “UNIX timestamp” would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<h5 id="panics-1"><a class="doc-anchor" href="#panics-1">§</a>Panics</h5>
<p>An <code>i64</code> with nanosecond precision can span a range of ~584 years. This function panics on
an out of range <code>NaiveDateTime</code>.</p>
<p>The dates that can be represented as nanoseconds are between 1677-09-21T00:12:43.145224192
and 2262-04-11T23:47:16.854775807.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_nanos_opt" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#417-419">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_nanos_opt" class="fn">timestamp_nanos_opt</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i64.html">i64</a>></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp_nanos_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of non-leap <em>nanoseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true “UNIX timestamp” would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<h5 id="errors-4"><a class="doc-anchor" href="#errors-4">§</a>Errors</h5>
<p>An <code>i64</code> with nanosecond precision can span a range of ~584 years. This function returns
<code>None</code> on an out of range <code>NaiveDateTime</code>.</p>
<p>The dates that can be represented as nanoseconds are between 1677-09-21T00:12:43.145224192
and 2262-04-11T23:47:16.854775807.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_subsec_millis" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#428-430">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_subsec_millis" class="fn">timestamp_subsec_millis</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp_subsec_millis()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of milliseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_subsec_micros" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#439-441">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_subsec_micros" class="fn">timestamp_subsec_micros</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.35: use <code>.and_utc().timestamp_subsec_micros()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of microseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.timestamp_subsec_nanos" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#448-450">Source</a><h4 class="code-header">pub const fn <a href="#method.timestamp_subsec_nanos" class="fn">timestamp_subsec_nanos</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.36: use <code>.and_utc().timestamp_subsec_nanos()</code> instead</span></div></span></summary><div class="docblock"><p>Returns the number of nanoseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999,999.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_add_signed" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#529-534">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_add_signed" class="fn">checked_add_signed</a>(self, rhs: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Adds given <code>TimeDelta</code> to the current date and time.</p>
<p>As a part of Chrono’s <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h5 id="errors-5"><a class="doc-anchor" href="#errors-5">§</a>Errors</h5>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
<h5 id="example-6"><a class="doc-anchor" href="#example-6">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let </span>hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::zero()), <span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::try_seconds(<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::try_seconds(-<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::try_seconds(<span class="number">86_400</span>).unwrap()),
<span class="prelude-val">Some</span>(from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap())
);
<span class="kw">let </span>hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
<span class="macro">assert_eq!</span>(
hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>).checked_add_signed(TimeDelta::try_milliseconds(<span class="number">450</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>))
);</code></pre></div>
<p>Overflow returns <code>None</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_add_signed(TimeDelta::try_days(<span class="number">1_000_000_000</span>).unwrap()), <span class="prelude-val">None</span>);</code></pre></div>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::zero()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_milliseconds(-<span class="number">500</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_milliseconds(<span class="number">800</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_seconds(<span class="number">10</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_seconds(-<span class="number">10</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>)));
<span class="macro">assert_eq!</span>(leap.checked_add_signed(TimeDelta::try_days(<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).and_hms_milli_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>).unwrap()));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_add_months" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#568-570">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_add_months" class="fn">checked_add_months</a>(self, rhs: <a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Adds given <code>Months</code> to the current date and time.</p>
<p>Uses the last day of the month if the day does not exist in the resulting month.</p>
<h5 id="errors-6"><a class="doc-anchor" href="#errors-6">§</a>Errors</h5>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
<h5 id="example-7"><a class="doc-anchor" href="#example-7">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Months, NaiveDate};
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>)
.unwrap()
.and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>)
.unwrap()
.checked_add_months(Months::new(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>)
.unwrap()
.and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>)
.unwrap()
.checked_add_months(Months::new(core::i32::MAX <span class="kw">as </span>u32 + <span class="number">1</span>)),
<span class="prelude-val">None
</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_add_offset" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#578-586">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_add_offset" class="fn">checked_add_offset</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Adds given <code>FixedOffset</code> to the current datetime.
Returns <code>None</code> if the result would be outside the valid range for <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime"><code>NaiveDateTime</code></a>.</p>
<p>This method is similar to <a href="#method.checked_add_offset"><code>checked_add_signed</code></a>, but preserves
leap seconds.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_sub_offset" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#593-601">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_sub_offset" class="fn">checked_sub_offset</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Subtracts given <code>FixedOffset</code> from the current datetime.
Returns <code>None</code> if the result would be outside the valid range for <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime"><code>NaiveDateTime</code></a>.</p>
<p>This method is similar to <a href="#method.checked_sub_signed"><code>checked_sub_signed</code></a>, but preserves
leap seconds.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.overflowing_add_offset" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#609-617">Source</a><h4 class="code-header">pub(crate) fn <a href="#method.overflowing_add_offset" class="fn">overflowing_add_offset</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class="docblock"><p>Adds given <code>FixedOffset</code> to the current datetime.
The resulting value may be outside the valid range of <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime"><code>NaiveDateTime</code></a>.</p>
<p>This can be useful for intermediate values, but the resulting out-of-range <code>NaiveDate</code>
should not be exposed to library users.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.overflowing_sub_offset" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#626-634">Source</a><h4 class="code-header">pub(crate) fn <a href="#method.overflowing_sub_offset" class="fn">overflowing_sub_offset</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class="docblock"><p>Subtracts given <code>FixedOffset</code> from the current datetime.
The resulting value may be outside the valid range of <a href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime"><code>NaiveDateTime</code></a>.</p>
<p>This can be useful for intermediate values, but the resulting out-of-range <code>NaiveDate</code>
should not be exposed to library users.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_sub_signed" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#709-714">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_sub_signed" class="fn">checked_sub_signed</a>(self, rhs: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Subtracts given <code>TimeDelta</code> from the current date and time.</p>
<p>As a part of Chrono’s <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h5 id="errors-7"><a class="doc-anchor" href="#errors-7">§</a>Errors</h5>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
<h5 id="example-8"><a class="doc-anchor" href="#example-8">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let </span>hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::zero()), <span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::try_seconds(<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::try_seconds(-<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60</span>).unwrap()),
<span class="prelude-val">Some</span>(hms(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>))
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::try_seconds(<span class="number">86_400</span>).unwrap()),
<span class="prelude-val">Some</span>(from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap())
);
<span class="kw">let </span>hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
<span class="macro">assert_eq!</span>(
hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>).checked_sub_signed(TimeDelta::try_milliseconds(<span class="number">670</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>))
);</code></pre></div>
<p>Overflow returns <code>None</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).checked_sub_signed(TimeDelta::try_days(<span class="number">1_000_000_000</span>).unwrap()), <span class="prelude-val">None</span>);</code></pre></div>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq!</span>(leap.checked_sub_signed(TimeDelta::zero()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq!</span>(leap.checked_sub_signed(TimeDelta::try_milliseconds(<span class="number">200</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>)));
<span class="macro">assert_eq!</span>(leap.checked_sub_signed(TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq!</span>(leap.checked_sub_signed(TimeDelta::try_seconds(<span class="number">60</span>).unwrap()),
<span class="prelude-val">Some</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>)));
<span class="macro">assert_eq!</span>(leap.checked_sub_signed(TimeDelta::try_days(<span class="number">1</span>).unwrap()),
<span class="prelude-val">Some</span>(from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).and_hms_milli_opt(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>).unwrap()));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_sub_months" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#748-750">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_sub_months" class="fn">checked_sub_months</a>(self, rhs: <a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Subtracts given <code>Months</code> from the current date and time.</p>
<p>Uses the last day of the month if the day does not exist in the resulting month.</p>
<h5 id="errors-8"><a class="doc-anchor" href="#errors-8">§</a>Errors</h5>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
<h5 id="example-9"><a class="doc-anchor" href="#example-9">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Months, NaiveDate};
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>)
.unwrap()
.and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>)
.unwrap()
.checked_sub_months(Months::new(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2013</span>, <span class="number">12</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>)
.unwrap()
.and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>)
.unwrap()
.checked_sub_months(Months::new(core::i32::MAX <span class="kw">as </span>u32 + <span class="number">1</span>)),
<span class="prelude-val">None
</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_add_days" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#756-758">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_add_days" class="fn">checked_add_days</a>(self, days: <a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Self></h4></section></summary><div class="docblock"><p>Add a duration in <a href="struct.Days.html" title="struct chrono::Days"><code>Days</code></a> to the date part of the <code>NaiveDateTime</code></p>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.checked_sub_days" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#764-766">Source</a><h4 class="code-header">pub const fn <a href="#method.checked_sub_days" class="fn">checked_sub_days</a>(self, days: <a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Self></h4></section></summary><div class="docblock"><p>Subtract a duration in <a href="struct.Days.html" title="struct chrono::Days"><code>Days</code></a> from the date part of the <code>NaiveDateTime</code></p>
<p>Returns <code>None</code> if the resulting date would be out of range.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.signed_duration_since" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#818-825">Source</a><h4 class="code-header">pub const fn <a href="#method.signed_duration_since" class="fn">signed_duration_since</a>(self, rhs: <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a></h4></section></summary><div class="docblock"><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
<p>As a part of Chrono’s <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<h5 id="example-10"><a class="doc-anchor" href="#example-10">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq!</span>(
d.and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap().signed_duration_since(d.and_hms_opt(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>).unwrap()),
TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60 </span>+ <span class="number">1</span>).unwrap()
);
<span class="comment">// July 8 is 190th day in the year 2016
</span><span class="kw">let </span>d0 = from_ymd(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq!</span>(
d.and_hms_milli_opt(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>)
.unwrap()
.signed_duration_since(d0.and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()),
TimeDelta::try_seconds(<span class="number">189 </span>* <span class="number">86_400 </span>+ <span class="number">7 </span>* <span class="number">60 </span>+ <span class="number">6</span>).unwrap()
+ TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);</code></pre></div>
<p>Leap seconds are handled, but the subtraction assumes that
there were no other leap seconds happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = from_ymd(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).and_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap();
<span class="macro">assert_eq!</span>(
leap.signed_duration_since(from_ymd(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).and_hms_opt(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()),
TimeDelta::try_seconds(<span class="number">3600</span>).unwrap() + TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
from_ymd(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap().signed_duration_since(leap),
TimeDelta::try_seconds(<span class="number">3600</span>).unwrap() - TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.format_with_items" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#857-863">Source</a><h4 class="code-header">pub fn <a href="#method.format_with_items" class="fn">format_with_items</a><'a, I, B>(&self, items: I) -> <a class="struct" href="format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a><I><div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a><Item = B> + <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
B: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><<a class="enum" href="format/enum.Item.html" title="enum chrono::format::Item">Item</a><'a>>,</div></h4></section></summary><div class="docblock"><p>Formats the combined date and time with the specified formatting items.
Otherwise it is the same as the ordinary <a href="#method.format"><code>format</code></a> method.</p>
<p>The <code>Iterator</code> of items should be <code>Clone</code>able,
since the resulting <code>DelayedFormat</code> value may be formatted multiple times.</p>
<h5 id="example-11"><a class="doc-anchor" href="#example-11">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::format::strftime::StrftimeItems;
<span class="kw">use </span>chrono::NaiveDate;
<span class="kw">let </span>fmt = StrftimeItems::new(<span class="string">"%Y-%m-%d %H:%M:%S"</span>);
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).unwrap().and_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.format_with_items(fmt.clone()).to_string(), <span class="string">"2015-09-05 23:56:04"</span>);
<span class="macro">assert_eq!</span>(dt.format(<span class="string">"%Y-%m-%d %H:%M:%S"</span>).to_string(), <span class="string">"2015-09-05 23:56:04"</span>);</code></pre></div>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, dt.format_with_items(fmt)), <span class="string">"2015-09-05 23:56:04"</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.format" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#900-902">Source</a><h4 class="code-header">pub fn <a href="#method.format" class="fn">format</a><'a>(&self, fmt: &'a <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>) -> <a class="struct" href="format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a><<a class="struct" href="format/strftime/struct.StrftimeItems.html" title="struct chrono::format::strftime::StrftimeItems">StrftimeItems</a><'a>></h4></section></summary><div class="docblock"><p>Formats the combined date and time with the specified format string.
See the <a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<p>This returns a <code>DelayedFormat</code>,
which gets converted to a string only when actual formatting happens.
You may use the <code>to_string</code> method to get a <code>String</code>,
or just feed it into <code>print!</code> and other formatting macros.
(In this way it avoids the redundant memory allocation.)</p>
<p>A wrong format string does <em>not</em> issue an error immediately.
Rather, converting or formatting the <code>DelayedFormat</code> fails.
You are recommended to immediately use <code>DelayedFormat</code> for this reason.</p>
<h5 id="example-12"><a class="doc-anchor" href="#example-12">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveDate;
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).unwrap().and_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.format(<span class="string">"%Y-%m-%d %H:%M:%S"</span>).to_string(), <span class="string">"2015-09-05 23:56:04"</span>);
<span class="macro">assert_eq!</span>(dt.format(<span class="string">"around %l %p on %b %-d"</span>).to_string(), <span class="string">"around 11 PM on Sep 5"</span>);</code></pre></div>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, dt.format(<span class="string">"%Y-%m-%d %H:%M:%S"</span>)), <span class="string">"2015-09-05 23:56:04"</span>);
<span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, dt.format(<span class="string">"around %l %p on %b %-d"</span>)), <span class="string">"around 11 PM on Sep 5"</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.and_local_timezone" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#922-924">Source</a><h4 class="code-header">pub fn <a href="#method.and_local_timezone" class="fn">and_local_timezone</a><Tz: <a class="trait" href="trait.TimeZone.html" title="trait chrono::TimeZone">TimeZone</a>>(
&self,
tz: Tz,
) -> <a class="type" href="offset/type.MappedLocalTime.html" title="type chrono::offset::MappedLocalTime">MappedLocalTime</a><<a class="struct" href="struct.DateTime.html" title="struct chrono::DateTime">DateTime</a><Tz>></h4></section></summary><div class="docblock"><p>Converts the <code>NaiveDateTime</code> into a timezone-aware <code>DateTime<Tz></code> with the provided
time zone.</p>
<h5 id="example-13"><a class="doc-anchor" href="#example-13">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{FixedOffset, NaiveDate};
<span class="kw">let </span>hour = <span class="number">3600</span>;
<span class="kw">let </span>tz = FixedOffset::east_opt(<span class="number">5 </span>* hour).unwrap();
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>)
.unwrap()
.and_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>)
.unwrap()
.and_local_timezone(tz)
.unwrap();
<span class="macro">assert_eq!</span>(dt.timezone(), tz);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.and_utc" class="method"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#937-939">Source</a><h4 class="code-header">pub const fn <a href="#method.and_utc" class="fn">and_utc</a>(&self) -> <a class="struct" href="struct.DateTime.html" title="struct chrono::DateTime">DateTime</a><<a class="struct" href="struct.Utc.html" title="struct chrono::Utc">Utc</a>></h4></section></summary><div class="docblock"><p>Converts the <code>NaiveDateTime</code> into the timezone-aware <code>DateTime<Utc></code>.</p>
<h5 id="example-14"><a class="doc-anchor" href="#example-14">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, Utc};
<span class="kw">let </span>dt =
NaiveDate::from_ymd_opt(<span class="number">2023</span>, <span class="number">1</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">19</span>, <span class="number">32</span>, <span class="number">33</span>).unwrap().and_utc();
<span class="macro">assert_eq!</span>(dt.timezone(), Utc);</code></pre></div>
</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Add%3CDays%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1998-2004">Source</a><a href="#impl-Add%3CDays%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add <code>Days</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><h4 id="panics-14"><a class="doc-anchor" href="#panics-14">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <code>checked_add_days</code> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-9" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1999">Source</a><a href="#associatedtype.Output-9" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.add-4" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2001-2003">Source</a><a href="#method.add-4" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add" class="fn">add</a>(self, days: <a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" title="type core::ops::arith::Add::Output">Output</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Add%3CDuration%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1645-1654">Source</a><a href="#impl-Add%3CDuration%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add <code>std::time::Duration</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s [leap second handling], the addition assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-3"><a class="doc-anchor" href="#panics-3">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_add_signed" title="method chrono::NaiveDateTime::checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-1" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1646">Source</a><a href="#associatedtype.Output-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.add-1" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1649-1653">Source</a><a href="#method.add-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add" class="fn">add</a>(self, rhs: <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Add%3CFixedOffset%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1696-1703">Source</a><a href="#impl-Add%3CFixedOffset%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add <code>FixedOffset</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><h4 id="panics-6"><a class="doc-anchor" href="#panics-6">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <code>checked_add_offset</code> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-2" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1697">Source</a><a href="#associatedtype.Output-2" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.add-2" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1700-1702">Source</a><a href="#method.add-2" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add" class="fn">add</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Add%3CMonths%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1750-1756">Source</a><a href="#impl-Add%3CMonths%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add <code>Months</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>The result will be clamped to valid days in the resulting month, see <code>checked_add_months</code> for
details.</p>
<h4 id="panics-7"><a class="doc-anchor" href="#panics-7">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <code>checked_add_months</code> to get an <code>Option</code> instead.</p>
<h4 id="example-40"><a class="doc-anchor" href="#example-40">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Months, NaiveDate};
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap() + Months::new(<span class="number">1</span>),
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">2</span>, <span class="number">0</span>).unwrap()
+ Months::new(<span class="number">11</span>),
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">2</span>, <span class="number">0</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">3</span>).unwrap()
+ Months::new(<span class="number">12</span>),
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">3</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">4</span>).unwrap()
+ Months::new(<span class="number">13</span>),
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">2</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">4</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">31</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">5</span>, <span class="number">0</span>).unwrap()
+ Months::new(<span class="number">1</span>),
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">28</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">5</span>, <span class="number">0</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2020</span>, <span class="number">1</span>, <span class="number">31</span>).unwrap().and_hms_opt(<span class="number">6</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()
+ Months::new(<span class="number">1</span>),
NaiveDate::from_ymd_opt(<span class="number">2020</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap().and_hms_opt(<span class="number">6</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()
);</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-3" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1751">Source</a><a href="#associatedtype.Output-3" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.add-3" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1753-1755">Source</a><a href="#method.add-3" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add" class="fn">add</a>(self, rhs: <a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" title="type core::ops::arith::Add::Output">Output</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Add%3CTimeDelta%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1626-1633">Source</a><a href="#impl-Add%3CTimeDelta%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add <code>TimeDelta</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s <a href="struct.NaiveTime.html#leap-second-handling" title="struct chrono::NaiveTime">leap second handling</a>, the addition assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-2"><a class="doc-anchor" href="#panics-2">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_add_signed" title="method chrono::NaiveDateTime::checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to get an <code>Option</code> instead.</p>
<h4 id="example-39"><a class="doc-anchor" href="#example-39">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let </span>hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::zero(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::try_seconds(<span class="number">1</span>).unwrap(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::try_seconds(-<span class="number">1</span>).unwrap(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60</span>).unwrap(), hms(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>));
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::try_seconds(<span class="number">86_400</span>).unwrap(),
from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) + TimeDelta::try_days(<span class="number">365</span>).unwrap(),
from_ymd(<span class="number">2017</span>, <span class="number">7</span>, <span class="number">8</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap()
);
<span class="kw">let </span>hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
<span class="macro">assert_eq!</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>) + TimeDelta::try_milliseconds(<span class="number">450</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>));</code></pre></div>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq!</span>(leap + TimeDelta::zero(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_milliseconds(-<span class="number">500</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_milliseconds(<span class="number">800</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_seconds(<span class="number">10</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_seconds(-<span class="number">10</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>));
<span class="macro">assert_eq!</span>(leap + TimeDelta::try_days(<span class="number">1</span>).unwrap(),
from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).and_hms_milli_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>).unwrap());</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1627">Source</a><a href="#associatedtype.Output" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.add" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1630-1632">Source</a><a href="#method.add" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add" class="fn">add</a>(self, rhs: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-AddAssign%3CDuration%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1683-1688">Source</a><a href="#impl-AddAssign%3CDuration%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html" title="trait core::ops::arith::AddAssign">AddAssign</a><<a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add-assign <code>std::time::Duration</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s [leap second handling], the addition assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-5"><a class="doc-anchor" href="#panics-5">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_add_signed" title="method chrono::NaiveDateTime::checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.add_assign-1" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1685-1687">Source</a><a href="#method.add_assign-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html#tymethod.add_assign" class="fn">add_assign</a>(&mut self, rhs: <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>)</h4></section></summary><div class='docblock'>Performs the <code>+=</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html#tymethod.add_assign">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-AddAssign%3CTimeDelta%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1666-1671">Source</a><a href="#impl-AddAssign%3CTimeDelta%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html" title="trait core::ops::arith::AddAssign">AddAssign</a><<a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Add-assign <code>TimeDelta</code> to <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s [leap second handling], the addition assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-4"><a class="doc-anchor" href="#panics-4">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_add_signed" title="method chrono::NaiveDateTime::checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.add_assign" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1668-1670">Source</a><a href="#method.add_assign" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html#tymethod.add_assign" class="fn">add_assign</a>(&mut self, rhs: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>)</h4></section></summary><div class='docblock'>Performs the <code>+=</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.AddAssign.html#tymethod.add_assign">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#impl-Clone-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/clone.rs.html#174">Source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: &Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.85.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Datelike-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#968-1355">Source</a><a href="#impl-Datelike-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.Datelike.html" title="trait chrono::Datelike">Datelike</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.year" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#983-985">Source</a><a href="#method.year" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.year" class="fn">year</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i32.html">i32</a></h4></section></summary><div class="docblock"><p>Returns the year number in the <a href="./struct.NaiveDate.html#calendar-date">calendar date</a>.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.year"><code>NaiveDate::year</code></a> method.</p>
<h5 id="example-16"><a class="doc-anchor" href="#example-16">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.year(), <span class="number">2015</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.month" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1003-1005">Source</a><a href="#method.month" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.month" class="fn">month</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month"><code>NaiveDate::month</code></a> method.</p>
<h5 id="example-17"><a class="doc-anchor" href="#example-17">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.month(), <span class="number">9</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.month0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1023-1025">Source</a><a href="#method.month0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.month0" class="fn">month0</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
<p>See also the <a href="struct.NaiveDate.html#method.month0" title="method chrono::NaiveDate::month0"><code>NaiveDate::month0</code></a> method.</p>
<h5 id="example-18"><a class="doc-anchor" href="#example-18">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.month0(), <span class="number">8</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.day" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1043-1045">Source</a><a href="#method.day" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.day" class="fn">day</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day"><code>NaiveDate::day</code></a> method.</p>
<h5 id="example-19"><a class="doc-anchor" href="#example-19">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.day(), <span class="number">25</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.day0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1063-1065">Source</a><a href="#method.day0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.day0" class="fn">day0</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
<p>See also the <a href="struct.NaiveDate.html#method.day0" title="method chrono::NaiveDate::day0"><code>NaiveDate::day0</code></a> method.</p>
<h5 id="example-20"><a class="doc-anchor" href="#example-20">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.day0(), <span class="number">24</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.ordinal" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1083-1085">Source</a><a href="#method.ordinal" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.ordinal" class="fn">ordinal</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal"><code>NaiveDate::ordinal</code></a> method.</p>
<h5 id="example-21"><a class="doc-anchor" href="#example-21">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.ordinal(), <span class="number">268</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.ordinal0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1103-1105">Source</a><a href="#method.ordinal0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.ordinal0" class="fn">ordinal0</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class="docblock"><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
<p>See also the <a href="struct.NaiveDate.html#method.ordinal0" title="method chrono::NaiveDate::ordinal0"><code>NaiveDate::ordinal0</code></a> method.</p>
<h5 id="example-22"><a class="doc-anchor" href="#example-22">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.ordinal0(), <span class="number">267</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.weekday" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1121-1123">Source</a><a href="#method.weekday" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.weekday" class="fn">weekday</a>(&self) -> <a class="enum" href="enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></h4></section></summary><div class="docblock"><p>Returns the day of week.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.weekday"><code>NaiveDate::weekday</code></a> method.</p>
<h5 id="example-23"><a class="doc-anchor" href="#example-23">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime, Weekday};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(dt.weekday(), Weekday::Fri);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_year" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1158-1160">Source</a><a href="#method.with_year" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_year" class="fn">with_year</a>(&self, year: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i32.html">i32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the year number changed, while keeping the same month and
day.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_year" title="method chrono::NaiveDate::with_year"><code>NaiveDate::with_year</code></a> method.</p>
<h5 id="errors-9"><a class="doc-anchor" href="#errors-9">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (February 29 in a non-leap year).</li>
<li>The year is out of range for a <code>NaiveDate</code>.</li>
</ul>
<h5 id="example-24"><a class="doc-anchor" href="#example-24">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_year(<span class="number">2016</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
dt.with_year(-<span class="number">308</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(-<span class="number">308</span>, <span class="number">9</span>, <span class="number">25</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_month" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1189-1191">Source</a><a href="#method.with_month" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_month" class="fn">with_month</a>(&self, month: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 1) changed.</p>
<p>Don’t combine multiple <code>Datelike::with_*</code> methods. The intermediate value may not exist.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_month" title="method chrono::NaiveDate::with_month"><code>NaiveDate::with_month</code></a> method.</p>
<h5 id="errors-10"><a class="doc-anchor" href="#errors-10">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (for example <code>month(4)</code> when day of the month is 31).</li>
<li>The value for <code>month</code> is invalid.</li>
</ul>
<h5 id="example-25"><a class="doc-anchor" href="#example-25">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_month(<span class="number">10</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_month(<span class="number">13</span>), <span class="prelude-val">None</span>); <span class="comment">// No month 13
</span><span class="macro">assert_eq!</span>(dt.with_month(<span class="number">2</span>), <span class="prelude-val">None</span>); <span class="comment">// No February 30</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_month0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1218-1220">Source</a><a href="#method.with_month0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_month0" class="fn">with_month0</a>(&self, month0: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 0) changed.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_month0" title="method chrono::NaiveDate::with_month0"><code>NaiveDate::with_month0</code></a> method.</p>
<h5 id="errors-11"><a class="doc-anchor" href="#errors-11">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (for example <code>month0(3)</code> when day of the month is 31).</li>
<li>The value for <code>month0</code> is invalid.</li>
</ul>
<h5 id="example-26"><a class="doc-anchor" href="#example-26">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_month0(<span class="number">9</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_month0(<span class="number">12</span>), <span class="prelude-val">None</span>); <span class="comment">// No month 13
</span><span class="macro">assert_eq!</span>(dt.with_month0(<span class="number">1</span>), <span class="prelude-val">None</span>); <span class="comment">// No February 30</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_day" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1246-1248">Source</a><a href="#method.with_day" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_day" class="fn">with_day</a>(&self, day: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 1) changed.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_day" title="method chrono::NaiveDate::with_day"><code>NaiveDate::with_day</code></a> method.</p>
<h5 id="errors-12"><a class="doc-anchor" href="#errors-12">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (for example <code>day(31)</code> in April).</li>
<li>The value for <code>day</code> is invalid.</li>
</ul>
<h5 id="example-27"><a class="doc-anchor" href="#example-27">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_day(<span class="number">30</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_day(<span class="number">31</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_day0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1274-1276">Source</a><a href="#method.with_day0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_day0" class="fn">with_day0</a>(&self, day0: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 0) changed.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_day0" title="method chrono::NaiveDate::with_day0"><code>NaiveDate::with_day0</code></a> method.</p>
<h5 id="errors-13"><a class="doc-anchor" href="#errors-13">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (for example <code>day(30)</code> in April).</li>
<li>The value for <code>day0</code> is invalid.</li>
</ul>
<h5 id="example-28"><a class="doc-anchor" href="#example-28">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_day0(<span class="number">29</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_day0(<span class="number">30</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_ordinal" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1313-1315">Source</a><a href="#method.with_ordinal" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_ordinal" class="fn">with_ordinal</a>(&self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 1) changed.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_ordinal" title="method chrono::NaiveDate::with_ordinal"><code>NaiveDate::with_ordinal</code></a> method.</p>
<h5 id="errors-14"><a class="doc-anchor" href="#errors-14">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (<code>with_ordinal(366)</code> in a non-leap year).</li>
<li>The value for <code>ordinal</code> is invalid.</li>
</ul>
<h5 id="example-29"><a class="doc-anchor" href="#example-29">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_ordinal(<span class="number">60</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_ordinal(<span class="number">366</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days
</span><span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_ordinal(<span class="number">60</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
dt.with_ordinal(<span class="number">366</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.with_ordinal0" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1352-1354">Source</a><a href="#method.with_ordinal0" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.with_ordinal0" class="fn">with_ordinal0</a>(&self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 0) changed.</p>
<p>See also the <a href="struct.NaiveDate.html#method.with_ordinal0" title="method chrono::NaiveDate::with_ordinal0"><code>NaiveDate::with_ordinal0</code></a> method.</p>
<h5 id="errors-15"><a class="doc-anchor" href="#errors-15">§</a>Errors</h5>
<p>Returns <code>None</code> if:</p>
<ul>
<li>The resulting date does not exist (<code>with_ordinal0(365)</code> in a non-leap year).</li>
<li>The value for <code>ordinal0</code> is invalid.</li>
</ul>
<h5 id="example-30"><a class="doc-anchor" href="#example-30">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Datelike, NaiveDate, NaiveDateTime};
<span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_ordinal0(<span class="number">59</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(dt.with_ordinal0(<span class="number">365</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days
</span><span class="kw">let </span>dt: NaiveDateTime =
NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap();
<span class="macro">assert_eq!</span>(
dt.with_ordinal0(<span class="number">59</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
dt.with_ordinal0(<span class="number">365</span>),
<span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap().and_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap())
);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.iso_week" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1126-1128">Source</a><a href="#method.iso_week" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#tymethod.iso_week" class="fn">iso_week</a>(&self) -> <a class="struct" href="naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></h4></section></summary><div class='docblock'>Returns the ISO week.</div></details><details class="toggle method-toggle" open><summary><section id="method.year_ce" class="method trait-impl"><a class="src rightside" href="../src/chrono/traits.rs.html#38-41">Source</a><a href="#method.year_ce" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#method.year_ce" class="fn">year_ce</a>(&self) -> (<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a>)</h4></section></summary><div class='docblock'>Returns the absolute year number starting from 1 with a boolean flag,
which is false when the year predates the epoch (BCE/BC) and true otherwise (CE/AD).</div></details><details class="toggle method-toggle" open><summary><section id="method.quarter" class="method trait-impl"><a class="src rightside" href="../src/chrono/traits.rs.html#47-49">Source</a><a href="#method.quarter" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#method.quarter" class="fn">quarter</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.u32.html">u32</a></h4></section></summary><div class='docblock'>Returns the quarter number starting from 1. <a href="trait.Datelike.html#method.quarter">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.num_days_from_ce" class="method trait-impl"><a class="src rightside" href="../src/chrono/traits.rs.html#252-267">Source</a><a href="#method.num_days_from_ce" class="anchor">§</a><h4 class="code-header">fn <a href="trait.Datelike.html#method.num_days_from_ce" class="fn">num_days_from_ce</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.i32.html">i32</a></h4></section></summary><div class='docblock'>Counts the days in the proleptic Gregorian calendar, with January 1, Year 1 (CE) as day 1. <a href="trait.Datelike.html#method.num_days_from_ce">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2048-2054">Source</a><a href="#impl-Debug-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>The <code>Debug</code> output of the naive date and time <code>dt</code> is the same as
<a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>dt.format("%Y-%m-%dT%H:%M:%S%.f")</code></a>.</p>
</div></section></summary><div class="docblock"><p>The string printed can be readily parsed via the <code>parse</code> method on <code>str</code>.</p>
<p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn’t matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h4 id="example-44"><a class="doc-anchor" href="#example-44">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveDate;
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).unwrap().and_hms_opt(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>).unwrap();
<span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, dt), <span class="string">"2016-11-15T07:39:24"</span>);</code></pre></div>
<p>Leap seconds may also be used.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>dt =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).unwrap().and_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap();
<span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, dt), <span class="string">"2015-06-30T23:59:60.500"</span>);</code></pre></div>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2049-2053">Source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.85.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2147-2151">Source</a><a href="#impl-Default-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>The default value for a NaiveDateTime is one with epoch 0
that is, 1st of January 1970 at 00:00:00.</p>
</div></section></summary><div class="docblock"><h4 id="example-47"><a class="doc-anchor" href="#example-47">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveDateTime;
<span class="macro">assert_eq!</span>(NaiveDateTime::default(), NaiveDateTime::UNIX_EPOCH);</code></pre></div>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2148-2150">Source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -> Self</h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.85.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Deserialize%3C'de%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/serde.rs.html#45-52">Source</a><a href="#impl-Deserialize%3C'de%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl<'de> <a class="trait" href="../serde/de/trait.Deserialize.html" title="trait serde::de::Deserialize">Deserialize</a><'de> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.deserialize" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/serde.rs.html#46-51">Source</a><a href="#method.deserialize" class="anchor">§</a><h4 class="code-header">fn <a href="../serde/de/trait.Deserialize.html#tymethod.deserialize" class="fn">deserialize</a><D>(deserializer: D) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, D::<a class="associatedtype" href="../serde/de/trait.Deserializer.html#associatedtype.Error" title="type serde::de::Deserializer::Error">Error</a>><div class="where">where
D: <a class="trait" href="../serde/de/trait.Deserializer.html" title="trait serde::de::Deserializer">Deserializer</a><'de>,</div></h4></section></summary><div class='docblock'>Deserialize this value from the given Serde deserializer. <a href="../serde/de/trait.Deserialize.html#tymethod.deserialize">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Display-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2082-2088">Source</a><a href="#impl-Display-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>The <code>Display</code> output of the naive date and time <code>dt</code> is the same as
<a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>dt.format("%Y-%m-%d %H:%M:%S%.f")</code></a>.</p>
</div></section></summary><div class="docblock"><p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn’t matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h4 id="example-45"><a class="doc-anchor" href="#example-45">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveDate;
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).unwrap().and_hms_opt(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>).unwrap();
<span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, dt), <span class="string">"2016-11-15 07:39:24"</span>);</code></pre></div>
<p>Leap seconds may also be used.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>dt =
NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).unwrap().and_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap();
<span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, dt), <span class="string">"2015-06-30 23:59:60.500"</span>);</code></pre></div>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2083-2087">Source</a><a href="#method.fmt-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Display.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.85.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.85.0/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-DurationRound-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/round.rs.html#200-214">Source</a><a href="#impl-DurationRound-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="round/trait.DurationRound.html" title="trait chrono::round::DurationRound">DurationRound</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Err-1" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/round.rs.html#201">Source</a><a href="#associatedtype.Err-1" class="anchor">§</a><h4 class="code-header">type <a href="round/trait.DurationRound.html#associatedtype.Err" class="associatedtype">Err</a> = <a class="enum" href="round/enum.RoundingError.html" title="enum chrono::round::RoundingError">RoundingError</a></h4></section></summary><div class='docblock'>Error that can occur in rounding or truncating</div></details><details class="toggle method-toggle" open><summary><section id="method.duration_round" class="method trait-impl"><a class="src rightside" href="../src/chrono/round.rs.html#203-205">Source</a><a href="#method.duration_round" class="anchor">§</a><h4 class="code-header">fn <a href="round/trait.DurationRound.html#tymethod.duration_round" class="fn">duration_round</a>(self, duration: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, Self::<a class="associatedtype" href="round/trait.DurationRound.html#associatedtype.Err" title="type chrono::round::DurationRound::Err">Err</a>></h4></section></summary><div class='docblock'>Return a copy rounded by TimeDelta. <a href="round/trait.DurationRound.html#tymethod.duration_round">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.duration_trunc" class="method trait-impl"><a class="src rightside" href="../src/chrono/round.rs.html#207-209">Source</a><a href="#method.duration_trunc" class="anchor">§</a><h4 class="code-header">fn <a href="round/trait.DurationRound.html#tymethod.duration_trunc" class="fn">duration_trunc</a>(self, duration: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, Self::<a class="associatedtype" href="round/trait.DurationRound.html#associatedtype.Err" title="type chrono::round::DurationRound::Err">Err</a>></h4></section></summary><div class='docblock'>Return a copy truncated by TimeDelta. <a href="round/trait.DurationRound.html#tymethod.duration_trunc">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.duration_round_up" class="method trait-impl"><a class="src rightside" href="../src/chrono/round.rs.html#211-213">Source</a><a href="#method.duration_round_up" class="anchor">§</a><h4 class="code-header">fn <a href="round/trait.DurationRound.html#tymethod.duration_round_up" class="fn">duration_round_up</a>(self, duration: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, Self::<a class="associatedtype" href="round/trait.DurationRound.html#associatedtype.Err" title="type chrono::round::DurationRound::Err">Err</a>></h4></section></summary><div class='docblock'>Return a copy rounded <strong>up</strong> by TimeDelta. <a href="round/trait.DurationRound.html#tymethod.duration_round_up">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CNaiveDate%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#952-966">Source</a><a href="#impl-From%3CNaiveDate%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-1" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#963-965">Source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(date: <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a>) -> Self</h4></section></summary><div class="docblock"><p>Converts a <code>NaiveDate</code> to a <code>NaiveDateTime</code> of the same date but at midnight.</p>
<h5 id="example-15"><a class="doc-anchor" href="#example-15">§</a>Example</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveDateTime};
<span class="kw">let </span>nd = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">5</span>, <span class="number">28</span>).unwrap();
<span class="kw">let </span>ndt = NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">5</span>, <span class="number">28</span>).unwrap().and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap();
<span class="macro">assert_eq!</span>(ndt, NaiveDateTime::from(nd));</code></pre></div>
</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CNaiveDateTime%3E-for-NaiveDate" class="impl"><a class="src rightside" href="../src/chrono/naive/date/mod.rs.html#2123-2127">Source</a><a href="#impl-From%3CNaiveDateTime%3E-for-NaiveDate" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>> for <a class="struct" href="struct.NaiveDate.html" title="struct chrono::NaiveDate">NaiveDate</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/date/mod.rs.html#2124-2126">Source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(naive_datetime: <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-FromStr-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2106-2135">Source</a><a href="#impl-FromStr-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/str/traits/trait.FromStr.html" title="trait core::str::traits::FromStr">FromStr</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Parsing a <code>str</code> into a <code>NaiveDateTime</code> uses the same format,
<a href="format/strftime/index.html" title="mod chrono::format::strftime"><code>%Y-%m-%dT%H:%M:%S%.f</code></a>, as in <code>Debug</code>.</p>
</div></section></summary><div class="docblock"><h4 id="example-46"><a class="doc-anchor" href="#example-46">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDateTime, NaiveDate};
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">18</span>).unwrap().and_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap();
<span class="macro">assert_eq!</span>(<span class="string">"2015-09-18T23:56:04"</span>.parse::<NaiveDateTime>(), <span class="prelude-val">Ok</span>(dt));
<span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">12345</span>, <span class="number">6</span>, <span class="number">7</span>).unwrap().and_hms_milli_opt(<span class="number">7</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap(); <span class="comment">// leap second
</span><span class="macro">assert_eq!</span>(<span class="string">"+12345-6-7T7:59:60.5"</span>.parse::<NaiveDateTime>(), <span class="prelude-val">Ok</span>(dt));
<span class="macro">assert!</span>(<span class="string">"foo"</span>.parse::<NaiveDateTime>().is_err());</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Err" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2107">Source</a><a href="#associatedtype.Err" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/str/traits/trait.FromStr.html#associatedtype.Err" class="associatedtype">Err</a> = <a class="struct" href="format/struct.ParseError.html" title="struct chrono::format::ParseError">ParseError</a></h4></section></summary><div class='docblock'>The associated error which can be returned from parsing.</div></details><details class="toggle method-toggle" open><summary><section id="method.from_str" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2109-2134">Source</a><a href="#method.from_str" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/str/traits/trait.FromStr.html#tymethod.from_str" class="fn">from_str</a>(s: &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.str.html">str</a>) -> <a class="type" href="format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>></h4></section></summary><div class='docblock'>Parses a string <code>s</code> to return a value of this type. <a href="https://doc.rust-lang.org/1.85.0/core/str/traits/trait.FromStr.html#tymethod.from_str">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Hash-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#impl-Hash-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.hash" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#method.hash" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hash.html#tymethod.hash" class="fn">hash</a><__H: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&mut __H</a>)</h4></section></summary><div class='docblock'>Feeds this value into the given <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hash.html#tymethod.hash">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.hash_slice" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.3.0">1.3.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/hash/mod.rs.html#235-237">Source</a></span><a href="#method.hash_slice" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hash.html#method.hash_slice" class="fn">hash_slice</a><H>(data: &[Self], state: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&mut H</a>)<div class="where">where
H: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Feeds a slice of this type into the given <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.85.0/core/hash/trait.Hash.html#method.hash_slice">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Ord-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#impl-Ord-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.cmp" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#method.cmp" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#tymethod.cmp" class="fn">cmp</a>(&self, other: &<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></h4></section></summary><div class='docblock'>This method returns an <a href="https://doc.rust-lang.org/1.85.0/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering"><code>Ordering</code></a> between <code>self</code> and <code>other</code>. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#tymethod.cmp">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.max" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.21.0">1.21.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#980-982">Source</a></span><a href="#method.max" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.max" class="fn">max</a>(self, other: Self) -> Self<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Compares and returns the maximum of two values. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.max">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.min" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.21.0">1.21.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1001-1003">Source</a></span><a href="#method.min" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.min" class="fn">min</a>(self, other: Self) -> Self<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Compares and returns the minimum of two values. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.min">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clamp" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.50.0">1.50.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1027-1029">Source</a></span><a href="#method.clamp" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.clamp" class="fn">clamp</a>(self, min: Self, max: Self) -> Self<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Restrict a value to a certain interval. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.Ord.html#method.clamp">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialEq-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#impl-PartialEq-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.eq" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#method.eq" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialEq.html#tymethod.eq" class="fn">eq</a>(&self, other: &<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#261">Source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>!=</code>. The default implementation is almost always sufficient,
and should not be overridden without very good reason.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialOrd-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#impl-PartialOrd-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.partial_cmp" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#67">Source</a><a href="#method.partial_cmp" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp" class="fn">partial_cmp</a>(&self, other: &<a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/1.85.0/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>></h4></section></summary><div class='docblock'>This method returns an ordering between <code>self</code> and <code>other</code> values if one exists. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.lt" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1335">Source</a></span><a href="#method.lt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.lt" class="fn">lt</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests less than (for <code>self</code> and <code>other</code>) and is used by the <code><</code> operator. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.lt">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.le" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1353">Source</a></span><a href="#method.le" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.le" class="fn">le</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests less than or equal to (for <code>self</code> and <code>other</code>) and is used by the
<code><=</code> operator. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.le">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.gt" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1371">Source</a></span><a href="#method.gt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.gt" class="fn">gt</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests greater than (for <code>self</code> and <code>other</code>) and is used by the <code>></code>
operator. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.gt">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.ge" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/cmp.rs.html#1389">Source</a></span><a href="#method.ge" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.ge" class="fn">ge</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests greater than or equal to (for <code>self</code> and <code>other</code>) and is used by
the <code>>=</code> operator. <a href="https://doc.rust-lang.org/1.85.0/core/cmp/trait.PartialOrd.html#method.ge">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Serialize-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/serde.rs.html#9-26">Source</a><a href="#impl-Serialize-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="../serde/ser/trait.Serialize.html" title="trait serde::ser::Serialize">Serialize</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Serialize a <code>NaiveDateTime</code> as an ISO 8601 string</p>
</div></section></summary><div class="docblock"><p>See <a href="naive/serde/index.html" title="mod chrono::naive::serde">the <code>naive::serde</code> module</a> for alternate serialization formats.</p>
</div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.serialize" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/serde.rs.html#10-25">Source</a><a href="#method.serialize" class="anchor">§</a><h4 class="code-header">fn <a href="../serde/ser/trait.Serialize.html#tymethod.serialize" class="fn">serialize</a><S>(&self, serializer: S) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><S::<a class="associatedtype" href="../serde/ser/trait.Serializer.html#associatedtype.Ok" title="type serde::ser::Serializer::Ok">Ok</a>, S::<a class="associatedtype" href="../serde/ser/trait.Serializer.html#associatedtype.Error" title="type serde::ser::Serializer::Error">Error</a>><div class="where">where
S: <a class="trait" href="../serde/ser/trait.Serializer.html" title="trait serde::ser::Serializer">Serializer</a>,</div></h4></section></summary><div class='docblock'>Serialize this value into the given Serde serializer. <a href="../serde/ser/trait.Serialize.html#tymethod.serialize">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub%3CDays%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2012-2018">Source</a><a href="#impl-Sub%3CDays%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract <code>Days</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><h4 id="panics-15"><a class="doc-anchor" href="#panics-15">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <code>checked_sub_days</code> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-10" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2013">Source</a><a href="#associatedtype.Output-10" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub-5" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#2015-2017">Source</a><a href="#method.sub-5" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, days: <a class="struct" href="struct.Days.html" title="struct chrono::Days">Days</a>) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" title="type core::ops::arith::Sub::Output">Output</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub%3CDuration%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1833-1842">Source</a><a href="#impl-Sub%3CDuration%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract <code>std::time::Duration</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s [leap second handling] the subtraction assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-9"><a class="doc-anchor" href="#panics-9">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_sub_signed" title="method chrono::NaiveDateTime::checked_sub_signed"><code>NaiveDateTime::checked_sub_signed</code></a> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-5" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1834">Source</a><a href="#associatedtype.Output-5" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub-1" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1837-1841">Source</a><a href="#method.sub-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, rhs: <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub%3CFixedOffset%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1886-1893">Source</a><a href="#impl-Sub%3CFixedOffset%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract <code>FixedOffset</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><h4 id="panics-12"><a class="doc-anchor" href="#panics-12">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <code>checked_sub_offset</code> to get an <code>Option</code> instead.</p>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-6" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1887">Source</a><a href="#associatedtype.Output-6" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub-2" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1890-1892">Source</a><a href="#method.sub-2" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, rhs: <a class="struct" href="struct.FixedOffset.html" title="struct chrono::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub%3CMonths%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1926-1932">Source</a><a href="#impl-Sub%3CMonths%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract <code>Months</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>The result will be clamped to valid days in the resulting month, see
<a href="struct.NaiveDateTime.html#method.checked_sub_months" title="method chrono::NaiveDateTime::checked_sub_months"><code>NaiveDateTime::checked_sub_months</code></a> for details.</p>
<h4 id="panics-13"><a class="doc-anchor" href="#panics-13">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_sub_months" title="method chrono::NaiveDateTime::checked_sub_months"><code>NaiveDateTime::checked_sub_months</code></a> to get an <code>Option</code> instead.</p>
<h4 id="example-42"><a class="doc-anchor" href="#example-42">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Months, NaiveDate};
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">01</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">01</span>, <span class="number">00</span>, <span class="number">00</span>).unwrap()
- Months::new(<span class="number">11</span>),
NaiveDate::from_ymd_opt(<span class="number">2013</span>, <span class="number">02</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">01</span>, <span class="number">00</span>, <span class="number">00</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">01</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">00</span>, <span class="number">02</span>, <span class="number">00</span>).unwrap()
- Months::new(<span class="number">12</span>),
NaiveDate::from_ymd_opt(<span class="number">2013</span>, <span class="number">01</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">00</span>, <span class="number">02</span>, <span class="number">00</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">01</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">00</span>, <span class="number">00</span>, <span class="number">03</span>).unwrap()
- Months::new(<span class="number">13</span>),
NaiveDate::from_ymd_opt(<span class="number">2012</span>, <span class="number">12</span>, <span class="number">01</span>).unwrap().and_hms_opt(<span class="number">00</span>, <span class="number">00</span>, <span class="number">03</span>).unwrap()
);</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-7" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1927">Source</a><a href="#associatedtype.Output-7" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub-3" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1929-1931">Source</a><a href="#method.sub-3" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, rhs: <a class="struct" href="struct.Months.html" title="struct chrono::Months">Months</a>) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" title="type core::ops::arith::Sub::Output">Output</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub%3CTimeDelta%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1814-1821">Source</a><a href="#impl-Sub%3CTimeDelta%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract <code>TimeDelta</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>This is the same as the addition with a negated <code>TimeDelta</code>.</p>
<p>As a part of Chrono’s <a href="struct.NaiveTime.html#leap-second-handling" title="struct chrono::NaiveTime">leap second handling</a> the subtraction assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case
the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<h4 id="panics-8"><a class="doc-anchor" href="#panics-8">§</a>Panics</h4>
<p>Panics if the resulting date would be out of range.
Consider using <a href="struct.NaiveDateTime.html#method.checked_sub_signed" title="method chrono::NaiveDateTime::checked_sub_signed"><code>NaiveDateTime::checked_sub_signed</code></a> to get an <code>Option</code> instead.</p>
<h4 id="example-41"><a class="doc-anchor" href="#example-41">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let </span>hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::zero(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::try_seconds(<span class="number">1</span>).unwrap(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::try_seconds(-<span class="number">1</span>).unwrap(), hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq!</span>(hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60</span>).unwrap(), hms(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>));
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::try_seconds(<span class="number">86_400</span>).unwrap(),
from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
hms(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) - TimeDelta::try_days(<span class="number">365</span>).unwrap(),
from_ymd(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">9</span>).and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap()
);
<span class="kw">let </span>hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
<span class="macro">assert_eq!</span>(hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>) - TimeDelta::try_milliseconds(<span class="number">670</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>));</code></pre></div>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq!</span>(leap - TimeDelta::zero(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq!</span>(leap - TimeDelta::try_milliseconds(<span class="number">200</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>));
<span class="macro">assert_eq!</span>(leap - TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq!</span>(leap - TimeDelta::try_seconds(<span class="number">60</span>).unwrap(), hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>));
<span class="macro">assert_eq!</span>(leap - TimeDelta::try_days(<span class="number">1</span>).unwrap(),
from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).and_hms_milli_opt(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>).unwrap());</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-4" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1815">Source</a><a href="#associatedtype.Output-4" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1818-1820">Source</a><a href="#method.sub" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, rhs: <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a>) -> <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Sub-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1983-1990">Source</a><a href="#impl-Sub-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<p>The implementation is a wrapper around <a href="struct.NaiveDateTime.html#method.signed_duration_since" title="method chrono::NaiveDateTime::signed_duration_since"><code>NaiveDateTime::signed_duration_since</code></a>.</p>
<h4 id="example-43"><a class="doc-anchor" href="#example-43">§</a>Example</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, TimeDelta};
<span class="kw">let </span>from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();
<span class="kw">let </span>d = from_ymd(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq!</span>(
d.and_hms_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).unwrap() - d.and_hms_opt(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>).unwrap(),
TimeDelta::try_seconds(<span class="number">3600 </span>+ <span class="number">60 </span>+ <span class="number">1</span>).unwrap()
);
<span class="comment">// July 8 is 190th day in the year 2016
</span><span class="kw">let </span>d0 = from_ymd(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq!</span>(
d.and_hms_milli_opt(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>).unwrap() - d0.and_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap(),
TimeDelta::try_seconds(<span class="number">189 </span>* <span class="number">86_400 </span>+ <span class="number">7 </span>* <span class="number">60 </span>+ <span class="number">6</span>).unwrap()
+ TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);</code></pre></div>
<p>Leap seconds are handled, but the subtraction assumes that no other leap
seconds happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = from_ymd(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).and_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap();
<span class="macro">assert_eq!</span>(
leap - from_ymd(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).and_hms_opt(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap(),
TimeDelta::try_seconds(<span class="number">3600</span>).unwrap() + TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);
<span class="macro">assert_eq!</span>(
from_ymd(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).and_hms_opt(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap() - leap,
TimeDelta::try_seconds(<span class="number">3600</span>).unwrap() - TimeDelta::try_milliseconds(<span class="number">500</span>).unwrap()
);</code></pre></div>
</div><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-8" class="associatedtype trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1984">Source</a><a href="#associatedtype.Output-8" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="toggle method-toggle" open><summary><section id="method.sub-4" class="method trait-impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1987-1989">Source</a><a href="#method.sub-4" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub" class="fn">sub</a>(self, rhs: <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a>) -> <a class="struct" href="struct.TimeDelta.html" title="struct chrono::TimeDelta">TimeDelta</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.Sub.html#tymethod.sub">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-SubAssign%3CDuration%3E-for-NaiveDateTime" class="impl"><a class="src rightside" href="../src/chrono/naive/datetime/mod.rs.html#1873-1878">Source</a><a href="#impl-SubAssign%3CDuration%3E-for-NaiveDateTime" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/arith/trait.SubAssign.html" title="trait core::ops::arith::SubAssign">SubAssign</a><<a class="struct" href="https://doc.rust-lang.org/1.85.0/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a>> for <a class="struct" href="struct.NaiveDateTime.html" title="struct chrono::NaiveDateTime">NaiveDateTime</a></h3><div class="docblock"><p>Subtract-assign <code>std::time::Duration</code> from <code>NaiveDateTime</code>.</p>
</div></section></summary><div class="docblock"><p>As a part of Chrono’s [leap second handling], the addition assumes that <strong>there is no leap
second ever</strong>, except when the <code>NaiveDateTime</code> itself represents a leap second in which case