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@phausler phausler commented Jun 9, 2025

This adds a new API defining an additional clock primitive that uses Date as an Instant and additionally adds routines for looking up historical leap seconds for high precision calculations that involve leap seconds.

@itingliu itingliu added the proposal This PR is for a proposal label Jun 10, 2025
phausler and others added 10 commits June 10, 2025 09:38
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
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@swift-ci please test

@itingliu itingliu merged commit 1fc2be3 into swiftlang:main Jun 10, 2025
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chloe-yeo pushed a commit to chloe-yeo/swift-foundation that referenced this pull request Jun 11, 2025
* Add a proposal for the definition of a UTCClock

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

---------

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
chloe-yeo pushed a commit to chloe-yeo/swift-foundation that referenced this pull request Jun 16, 2025
* Add a proposal for the definition of a UTCClock

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

* Update Proposals/NNNN-UTCClock.md

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

---------

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>
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