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Pull requests list

API: timestamp resolution inference: default to microseconds when possible Datetime Datetime data dtype Non-Nano datetime64/timedelta64 with non-nanosecond resolution Stale Timestamp pd.Timestamp and associated methods
#62031 by jorisvandenbossche was closed Nov 27, 2025 • Draft updated Nov 27, 2025
15
API: to_datetime strings default to microsecond Datetime Datetime data dtype Non-Nano datetime64/timedelta64 with non-nanosecond resolution Timestamp pd.Timestamp and associated methods
#62801 by jbrockmendel was merged Nov 19, 2025 Loading… updated Nov 20, 2025
6 tasks done
3.0
2
33
BUG: Series.resample failing for non-nanosecond unit that's out of bounds for nano reso Non-Nano datetime64/timedelta64 with non-nanosecond resolution Resample resample method
#62955 by phofl was merged Nov 3, 2025 Loading… updated Nov 3, 2025
5 tasks done
3.0
1
5
BUG: Timestamp.replace failing to update unit Datetime Datetime data dtype Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#62301 by jbrockmendel was merged Sep 9, 2025 Loading… updated Sep 9, 2025
3 of 5 tasks
3.0
1
1
POC/ENH: Timedelta min/max/resolution support non-nano Non-Nano datetime64/timedelta64 with non-nanosecond resolution Timedelta Timedelta data type
#47641 by jbrockmendel was merged Jul 8, 2022 Loading… updated Apr 21, 2025 1.5
8
BUG: pd.concat dataframes with different datetime64 resolutions Non-Nano datetime64/timedelta64 with non-nanosecond resolution Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#53641 by Charlie-XIAO was merged Oct 30, 2023 Loading… updated Feb 22, 2025
3 of 4 tasks
2.2
1
31
BUG: Timestamp.unit now reflects changes in components after Timestamp.replace Non-Nano datetime64/timedelta64 with non-nanosecond resolution Timestamp pd.Timestamp and associated methods
#58121 by diogomsmiranda was closed Aug 9, 2024 Loading… updated Aug 9, 2024
4 tasks done
1
15
BUG: DatetimeIndex.union with non-nano Non-Nano datetime64/timedelta64 with non-nanosecond resolution setops union, intersection, difference, symmetric_difference
#59037 by mroeschke was merged Jun 24, 2024 Loading… updated Jun 24, 2024
4 tasks done
3.0
1
4
Fix wrong save of datetime64[s] in HDFStore IO HDF5 read_hdf, HDFStore Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#59018 by chaoyihu was merged Jun 18, 2024 Loading… updated Jun 19, 2024
5 tasks done
3.0
1
17
ENH/WIP: resolution inference in pd.to_datetime, DatetimeIndex Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#55901 by jbrockmendel was merged May 31, 2024 Loading… updated Jun 17, 2024
10 of 13 tasks
3.0
9
43
BUG: merge should upcast to highest resolution Non-Nano datetime64/timedelta64 with non-nanosecond resolution Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#56310 by lithomas1 was closed Apr 23, 2024 Loading… updated Apr 23, 2024
5 tasks
1
9
BUG: setitem with mixed-resolution dt64s Indexing Related to indexing on series/frames, not to indexes themselves Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56419 by jbrockmendel was merged Apr 23, 2024 Loading… updated Apr 23, 2024
3 of 5 tasks
3.0
1
15
BUG: Timestamp.unit is now reflecting changes in components after Timestamp.replace Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#58106 by diogomsmiranda was closed Apr 1, 2024 Loading… updated Apr 1, 2024
BUG: to_datetime with floats and unit not matching Timestamp Datetime Datetime data dtype Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56037 by jbrockmendel was merged Nov 22, 2023 Loading… updated Feb 21, 2024
5 tasks
2.2
7
DEPR: Deprecate use of un-supported numpy dt64/td64 dtype for pandas.array Deprecate Functionality to remove in pandas Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#53817 by rmhowe425 was merged Jul 11, 2023 Loading… updated Feb 17, 2024
5 tasks done
2.1
1
14
ENH: read_stata return non-nano IO Stata read_stata, to_stata Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#55642 by jbrockmendel was merged Feb 2, 2024 Loading… updated Feb 2, 2024
2 of 5 tasks
3.0
13
BUG: construct Timestamp with year out of pydatetime range Non-Nano datetime64/timedelta64 with non-nanosecond resolution Stale Timestamp pd.Timestamp and associated methods
#52191 by jbrockmendel was closed Jan 31, 2024 Loading… updated Jan 31, 2024
2 of 5 tasks
1
4
BUG: fillna with mixed-resolution dt64/td64 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56413 by jbrockmendel was merged Dec 9, 2023 Loading… updated Dec 9, 2023
2 of 5 tasks
2.2
1
BUG: Fix Timestamp('now') and Timestamp.now unit inconsistency Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56281 by yuanx749 was merged Dec 7, 2023 Loading… updated Dec 8, 2023
4 of 5 tasks
2.2
1
11
Backport PR #53641: BUG: pd.concat dataframes with different dateti… Non-Nano datetime64/timedelta64 with non-nanosecond resolution Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#56311 by lithomas1 was closed Dec 8, 2023 • Draft updated Dec 8, 2023
5 tasks
2.1.4
1
ENH: non-nano datetime64s for read_sas IO SAS SAS: read_sas Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56127 by jbrockmendel was merged Dec 5, 2023 Loading… updated Dec 5, 2023
2 of 5 tasks
2.2
4
TST: dt64 units Non-Nano datetime64/timedelta64 with non-nanosecond resolution Testing pandas testing functions or related to the test suite
#56261 by jbrockmendel was merged Dec 4, 2023 Loading… updated Dec 4, 2023 2.2
9
BUG: cut with non-nano cut cut, qcut Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#56101 by jbrockmendel was merged Dec 1, 2023 Loading… updated Dec 1, 2023
2 of 5 tasks
2.2
4
BUG: support non-nano times in ewm Non-Nano datetime64/timedelta64 with non-nanosecond resolution Window rolling, ewma, expanding
#56262 by jbrockmendel was merged Nov 30, 2023 Loading… updated Nov 30, 2023
5 tasks
2.2
4
TST: dt64 units Non-Nano datetime64/timedelta64 with non-nanosecond resolution Testing pandas testing functions or related to the test suite
#56239 by jbrockmendel was merged Nov 29, 2023 Loading… updated Nov 30, 2023
5 tasks
2.2
1
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