Define ISO 8601-1:2019 date strings

schemas/iso/datetime/2019/date-calendar-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Date (Basic Format)",
+  "description": "A complete representation of a calendar date in basic format [YYYY][MM][DD] (§5.2.2.1 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "19850412", "20000101", "20231231", "00000101", "99991231" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^([0-9]{4}(0[13578]|1[02])(0[1-9]|[12][0-9]|3[01])|[0-9]{4}(0[469]|11)(0[1-9]|[12][0-9]|30)|[0-9]{4}02(0[1-9]|1[0-9]|2[0-9]))$"
+}

schemas/iso/datetime/2019/date-calendar-century.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Century",
+  "description": "A calendar date with reduced precision representing a specific century [YY] (§5.2.2.2 d)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "19", "20", "00", "99" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{2}$"
+}

schemas/iso/datetime/2019/date-calendar-decade.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Decade",
+  "description": "A calendar date with reduced precision representing a specific decade [YYY] (§5.2.2.2 c)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "198", "200", "202", "000", "999" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{3}$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Date Expanded (Basic Format)",
+  "description": "An expanded representation of a calendar date in basic format [±][YYYYYY][MM][DD] with six digits for the year (§5.2.2.3 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+0019850412",
+    "-0000010101",
+    "+9999991231",
+    "+0000000101",
+    "-0100000101"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^([+-][0-9]{6}(0[13578]|1[02])(0[1-9]|[12][0-9]|3[01])|[+-][0-9]{6}(0[469]|11)(0[1-9]|[12][0-9]|30)|[+-][0-9]{6}02(0[1-9]|1[0-9]|2[0-9]))$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-century.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Century Expanded",
+  "description": "An expanded representation of a calendar century [±][YYYY] with four digits (§5.2.2.3 e)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "+0019", "-0000", "+9999", "+0000", "-0100" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{4}$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-decade.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Decade Expanded",
+  "description": "An expanded representation of a calendar decade [±][YYYYY] with five digits (§5.2.2.3 d)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "+00198", "-00000", "+99999", "+00000", "-01000" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{5}$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Date Expanded (Extended Format)",
+  "description": "An expanded representation of a calendar date in extended format [±][YYYYYY][\"-\"][MM][\"-\"][DD] with six digits for the year (§5.2.2.3 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985-04-12",
+    "-000001-01-01",
+    "+999999-12-31",
+    "+000000-01-01",
+    "-010000-01-01"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^([+-][0-9]{6}-(0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01])|[+-][0-9]{6}-(0[469]|11)-(0[1-9]|[12][0-9]|30)|[+-][0-9]{6}-02-(0[1-9]|1[0-9]|2[0-9]))$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-month.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Month Expanded (Extended Format)",
+  "description": "An expanded representation of a calendar month in extended format [±][YYYYYY][\"-\"][MM] with six digits for the year (§5.2.2.3 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985-04",
+    "-000001-01",
+    "+999999-12",
+    "+000000-01",
+    "-010000-12"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}-(0[1-9]|1[0-2])$"
+}

schemas/iso/datetime/2019/date-calendar-expanded-year.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Year Expanded",
+  "description": "An expanded representation of a calendar year [±][YYYYYY] with six digits for the year (§5.2.2.3 c)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "+001985", "-000001", "+999999", "+000000", "-010000" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}$"
+}

schemas/iso/datetime/2019/date-calendar-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Date (Extended Format)",
+  "description": "A complete representation of a calendar date in extended format [YYYY][\"-\"][MM][\"-\"][DD] (§5.2.2.1 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "1985-04-12",
+    "2000-01-01",
+    "2023-12-31",
+    "0000-01-01",
+    "9999-12-31"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^([0-9]{4}-(0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01])|[0-9]{4}-(0[469]|11)-(0[1-9]|[12][0-9]|30)|[0-9]{4}-02-(0[1-9]|1[0-9]|2[0-9]))$"
+}

schemas/iso/datetime/2019/date-calendar-month.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Month (Extended Format)",
+  "description": "A calendar date with reduced precision representing a specific calendar month [YYYY][\"-\"][MM] (§5.2.2.2 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985-04", "2000-01", "2023-12", "0000-01", "9999-12" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}-(0[1-9]|1[0-2])$"
+}

schemas/iso/datetime/2019/date-calendar-year.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Calendar Year",
+  "description": "A calendar date with reduced precision representing a specific calendar year [YYYY] (§5.2.2.2 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985", "2000", "2023", "0000", "9999" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}$"
+}

schemas/iso/datetime/2019/date-ordinal-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Ordinal Date (Basic Format)",
+  "description": "A complete representation of an ordinal date in basic format [YYYY][DDD] where DDD is the calendar day of year (001-365/366) (§5.2.3.1 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985102", "2000001", "2000366", "2023365", "0000001" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}(00[1-9]|0[1-9][0-9]|[12][0-9][0-9]|3[0-5][0-9]|36[0-6])$"
+}

schemas/iso/datetime/2019/date-ordinal-expanded-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Ordinal Date Expanded (Basic Format)",
+  "description": "An expanded representation of an ordinal date in basic format [±][YYYYYY][DDD] with six digits for the year and DDD as calendar day of year (001-365/366) (§5.2.3.2 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985102",
+    "-000001001",
+    "+999999366",
+    "+000000001",
+    "-010000365"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}(00[1-9]|0[1-9][0-9]|[12][0-9][0-9]|3[0-5][0-9]|36[0-6])$"
+}

schemas/iso/datetime/2019/date-ordinal-expanded-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Ordinal Date Expanded (Extended Format)",
+  "description": "An expanded representation of an ordinal date in extended format [±][YYYYYY][\"-\"][DDD] with six digits for the year and DDD as calendar day of year (001-365/366) (§5.2.3.2 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985-102",
+    "-000001-001",
+    "+999999-366",
+    "+000000-001",
+    "-010000-365"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}-(00[1-9]|0[1-9][0-9]|[12][0-9][0-9]|3[0-5][0-9]|36[0-6])$"
+}

schemas/iso/datetime/2019/date-ordinal-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Ordinal Date (Extended Format)",
+  "description": "A complete representation of an ordinal date in extended format [YYYY][\"-\"][DDD] where DDD is the calendar day of year (001-365/366) (§5.2.3.1 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985-102", "2000-001", "2000-366", "2023-365", "0000-001" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}-(00[1-9]|0[1-9][0-9]|[12][0-9][0-9]|3[0-5][0-9]|36[0-6])$"
+}

schemas/iso/datetime/2019/date-week-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date (Basic Format)",
+  "description": "A complete representation of a week date in basic format [YYYY][\"W\"][WW][D] where WW is the calendar week of year (01-53) and D is the calendar day of week (1-7) (§5.2.4.1 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985W155", "2000W011", "2023W527", "0000W011", "9999W537" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}W(0[1-9]|[1-4][0-9]|5[0-3])[1-7]$"
+}

schemas/iso/datetime/2019/date-week-expanded-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Expanded (Basic Format)",
+  "description": "An expanded representation of a week date in basic format [±][YYYYYY][\"W\"][WW][D] with six digits for the year, WW as calendar week of year (01-53), and D as calendar day of week (1-7) (§5.2.4.3 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985W155",
+    "-000001W011",
+    "+999999W537",
+    "+000000W011",
+    "-010000W527"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}W(0[1-9]|[1-4][0-9]|5[0-3])[1-7]$"
+}

schemas/iso/datetime/2019/date-week-expanded-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Expanded (Extended Format)",
+  "description": "An expanded representation of a week date in extended format [±][YYYYYY][\"-\"][\"W\"][WW][\"-\"][D] with six digits for the year, WW as calendar week of year (01-53), and D as calendar day of week (1-7) (§5.2.4.3 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985-W15-5",
+    "-000001-W01-1",
+    "+999999-W53-7",
+    "+000000-W01-1",
+    "-010000-W52-7"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}-W(0[1-9]|[1-4][0-9]|5[0-3])-[1-7]$"
+}

schemas/iso/datetime/2019/date-week-expanded-reduced-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Expanded Reduced Precision (Basic Format)",
+  "description": "An expanded representation of a week date with reduced precision in basic format [±][YYYYYY][\"W\"][WW] with six digits for the year and WW as calendar week of year (01-53) (§5.2.4.3 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985W15",
+    "-000001W01",
+    "+999999W53",
+    "+000000W01",
+    "-010000W52"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}W(0[1-9]|[1-4][0-9]|5[0-3])$"
+}

schemas/iso/datetime/2019/date-week-expanded-reduced-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Expanded Reduced Precision (Extended Format)",
+  "description": "An expanded representation of a week date with reduced precision in extended format [±][YYYYYY][\"-\"][\"W\"][WW] with six digits for the year and WW as calendar week of year (01-53) (§5.2.4.3 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "+001985-W15",
+    "-000001-W01",
+    "+999999-W53",
+    "+000000-W01",
+    "-010000-W52"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[+-][0-9]{6}-W(0[1-9]|[1-4][0-9]|5[0-3])$"
+}

schemas/iso/datetime/2019/date-week-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date (Extended Format)",
+  "description": "A complete representation of a week date in extended format [YYYY][\"-\"][\"W\"][WW][\"-\"][D] where WW is the calendar week of year (01-53) and D is the calendar day of week (1-7) (§5.2.4.1 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [
+    "1985-W15-5",
+    "2000-W01-1",
+    "2023-W52-7",
+    "0000-W01-1",
+    "9999-W53-7"
+  ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}-W(0[1-9]|[1-4][0-9]|5[0-3])-[1-7]$"
+}

schemas/iso/datetime/2019/date-week-reduced-basic.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Reduced Precision (Basic Format)",
+  "description": "A week date with reduced precision in basic format [YYYY][\"W\"][WW] where WW is the calendar week of year (01-53) (§5.2.4.2 a)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985W15", "2000W01", "2023W52", "0000W01", "9999W53" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}W(0[1-9]|[1-4][0-9]|5[0-3])$"
+}

schemas/iso/datetime/2019/date-week-reduced-extended.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "ISO 8601-1:2019 Week Date Reduced Precision (Extended Format)",
+  "description": "A week date with reduced precision in extended format [YYYY][\"-\"][\"W\"][WW] where WW is the calendar week of year (01-53) (§5.2.4.2 b)",
+  "$comment": "https://www.iso.org/standard/70907.html",
+  "examples": [ "1985-W15", "2000-W01", "2023-W52", "0000-W01", "9999-W53" ],
+  "x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",
+  "type": "string",
+  "pattern": "^[0-9]{4}-W(0[1-9]|[1-4][0-9]|5[0-3])$"
+}