Modern Tz TimeZone OffsetAt

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TimeZone.OffsetAt

Returns the zone's offset from UTC at a given moment as a TimeSpan.

Syntax

TimeZone.OffsetAt( byref i as chrono.Instant ) as chrono.TimeSpan

Examples

#import "std/tz"
#import "std/tzdata"
#import "std/chrono"
using tz
dim as TimeZone ny = TimeZone.FindById( "America/New_York" )
dim as chrono.Instant july = chrono.Instant.ParseIso( "2025-07-04T16:00:00Z" )
print ny.OffsetAt( july ).TotalHours      '' -4

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Library: Time Zones (std/tz)
Category: Time Zones
Documented under: TimeZone