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PyPI · #2554 most downloaded on PyPI
IERS Earth Rotation and Leap Second tables for the astropy core package
Last release 6 days ago
28 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
3 years old
177 releases · first in 2023
One column per quarter.
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.21.0.41.39...v0.2025.7.28.0.41.50
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.21.0.41.39...v0.2025.7.28.0.41.50
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.14.0.40.29...v0.2025.7.21.0.41.39
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.14.0.40.29...v0.2025.7.21.0.41.39
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.7.0.39.39...v0.2025.7.14.0.40.29
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.7.7.0.39.39...v0.2025.7.14.0.40.29
Bump the actions group in /.github/workflows with 2 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/40
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.30.0.39.40...v0.2025.7.7.0.39.39
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.23.0.39.50...v0.2025.6.30.0.39.40
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.23.0.39.50...v0.2025.6.30.0.39.40
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.16.0.38.47...v0.2025.6.23.0.39.50
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.16.0.38.47...v0.2025.6.23.0.39.50
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.9.14.9.37...v0.2025.6.16.0.38.47
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.9.14.9.37...v0.2025.6.16.0.38.47
chore(build): switch to hatch as build backend by @SauravMaheshkar in https://github.com/astropy/astropy-iers-data/pull/39
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.6.9.0.39.3...v0.2025.6.9.14.9.37
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.5.26.0.37.21...v0.2025.6.2.0.38.23
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.5.19.0.38.36...v0.2025.5.26.0.37.21
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.5.12.0.38.29...v0.2025.5.19.0.38.36
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.5.5.0.38.14...v0.2025.5.12.0.38.29
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.5.5.0.38.14...v0.2025.5.12.0.38.29
Bump the actions group in /.github/workflows with 2 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/38
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.4.28.0.37.27...v0.2025.5.5.0.38.14
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.4.21.0.37.6...v0.2025.4.28.0.37.27
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.4.14.0.37.22...v0.2025.4.21.0.37.6
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.4.7.0.35.30...v0.2025.4.14.0.37.22
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.4.7.0.35.30...v0.2025.4.14.0.37.22
Bump actions/setup-python from 5.4.0 to 5.5.0 in /.github/workflows in the actions group by @dependabot in https://github.com/astropy/astropy-iers-dat
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.3.31.0.36.18...v0.2025.4.7.0.35.30
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.3.17.0.34.53...v0.2025.3.24.0.35.32
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.2.17.0.34.13...v0.2025.2.24.0.34.4
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.2.10.0.33.26...v0.2025.2.17.0.34.13
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.2.10.0.33.26...v0.2025.2.17.0.34.13
Bump the actions group in /.github/workflows with 3 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/36
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.2.3.0.32.42...v0.2025.2.10.0.33.26
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.31.12.41.4...v0.2025.2.3.0.32.42
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.31.12.41.4...v0.2025.2.3.0.32.42
chore: migrate to scripts dir by @SauravMaheshkar in https://github.com/astropy/astropy-iers-data/pull/34
scripts dir by @SauravMaheshkar in https://github.com/astropy/astropy-iers-data/pull/34Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.27.0.32.44...v0.2025.1.31.12.41.4
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.13.0.34.51...v0.2025.1.20.0.32.27
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.6.0.33.42...v0.2025.1.13.0.34.51
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2025.1.6.0.33.42...v0.2025.1.13.0.34.51
Bump the actions group in /.github/workflows with 2 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/35
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.12.30.0.33.36...v0.2025.1.6.0.33.42
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.12.16.0.35.48...v0.2024.12.23.0.33.24
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.12.2.0.35.34...v0.2024.12.9.0.36.21
Bump the actions group in /.github/workflows with 2 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/33
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.11.25.0.34.48...v0.2024.12.2.0.35.34
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.11.4.0.33.34...v0.2024.11.11.0.32.38
Bump the actions group in /.github/workflows with 3 updates by @dependabot in https://github.com/astropy/astropy-iers-data/pull/32
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.10.28.0.34.7...v0.2024.11.4.0.33.34
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Bump actions/checkout from 4.2.0 to 4.2.1 in /.github/workflows in the actions group by @dependabot in https://github.com/astropy/astropy-iers-data/pu
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.10.14.0.32.55...v0.2024.10.21.0.33.21
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MNT: Use hash for Action workflow versions and update if needed by @pllim in https://github.com/astropy/astropy-iers-data/pull/30
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.9.23.0.31.43...v0.2024.9.30.0.32.59
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Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.9.12.13.29.57...v0.2024.9.16.0.32.21
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Remove leading zeros in tag to make tag consistent with PyPI release by @astrofrog in https://github.com/astropy/astropy-iers-data/pull/28
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.09.11.18.16.39...v0.2024.9.12.13.29.57
Fix continuous integration by @astrofrog in https://github.com/astropy/astropy-iers-data/pull/29
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.09.02.00.33.23...v0.2024.09.11.18.16.39
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Tell setuptools_scm to not normalize version (fixes #17) by @sergiopasra in https://github.com/astropy/astropy-iers-data/pull/26
Full Changelog: https://github.com/astropy/astropy-iers-data/compare/v0.2024.08.26.00.31.57...v0.2024.08.27.10.28.29
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