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Support ISO 8601 24:00:00 (endOfDayFrag) in XSD DateTime validation - #124437

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tarekgh merged 6 commits into

mainfrom

copilot/add-xml-validation-support

Feb 16, 2026

Merged

Support ISO 8601 24:00:00 (endOfDayFrag) in XSD DateTime validation#124437
tarekgh merged 6 commits into
mainfrom
copilot/add-xml-validation-support

Commits on Feb 15, 2026
- Initial plan
  Copilot
  committed
  2da4665
- Support ISO 8601 24:00:00 (endOfDayFrag) in XsdDateTime parsing
  
  Copilot
  and
  jeffhandley
  committed
  4ef3b50
- Add comprehensive tests for endOfDayFrag (24:00:00) support in XsdDateTime
  
  Copilot
  and
  jeffhandley
  committed
  f876d89
- Improve test assertions and add boundary test cases
  
  Copilot
  and
  jeffhandley
  committed
  cb30b9c
- Add Debug.Assert for minute/second/fraction when hour is 24
  
  Copilot
  and
  tarekgh
  committed
  3db9127
- Extract overflow constant to static field; improve test assertions with DateTimeKind; remove section separators
  
  Copilot
  and
  tarekgh
  committed
  2cfb49c