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BUG: timeseries (tz-aware) .plot() fails if timeseries begin is at edge of DST change-over

Bug

TimezonesTimezone data dtypeTimezone data dtype

Visualizationplottingplotting

Status: Open.

#62936 In pandas-dev/pandas;

· ctopfel opened on Oct 31, 2025

BUG: index.union fails at DST boundary

Bug

good first issue

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

Needs TestsUnit test(s) needed to prevent regressionsUnit test(s) needed to prevent regressions

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#62915 In pandas-dev/pandas;

· anttimc opened on Oct 30, 2025

TST: test_on_offset_implementations failing on WASM on CI

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#60205 In pandas-dev/pandas;

· mroeschke opened on Nov 6, 2024

BUG: tz-aware series with NaT raises exception on .to_numpy("datetime64")

Bug

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#59772 In pandas-dev/pandas;

· Ranfir opened on Sep 10, 2024

BUG: .max() raises exception on Series with object dtype and mixture of Timestamp and NaT: TypeError: '>=' not supported between instances of 'Timestamp' and 'float'

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#58707 In pandas-dev/pandas;

· kerrickstaley opened on May 13, 2024

BUG: pyarrow.Array.from_pandas converts empty timestamp[s][pyarrow, UTC] pandas Series to ChunkedArray, not TimestampArray

Arrowpyarrow functionalitypyarrow functionality

Bug

TimezonesTimezone data dtypeTimezone data dtype

Upstream issueIssue related to pandas dependencyIssue related to pandas dependency

Status: Open.

#57840 In pandas-dev/pandas;

· Wainberg opened on Mar 14, 2024

BUG: pandas 2.2.0 <code>DataFrame.groupby</code> regression when group labels of type <code>pd.Timestamp</code>

Bug

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#57192 In pandas-dev/pandas;

· maread99 opened on Feb 1, 2024

BUG: Timestamp.fromisoformat drops ISO 8601 timezone information

Bug

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#56398 In pandas-dev/pandas;

· kohlerjl opened on Dec 8, 2023

BUG: Pyarrow backend fails to export index with timezone <code>ArrowInvalid</code> exception

Arrowpyarrow functionalitypyarrow functionality

Bug

TimezonesTimezone data dtypeTimezone data dtype

Upstream issueIssue related to pandas dependencyIssue related to pandas dependency

Status: Open.

#56282 In pandas-dev/pandas;

· mattharrison opened on Dec 1, 2023

BUG: Inconsistent behavior of <code>Series.values</code> with <code>Series.array</code> or <code>Series.to_numpy()</code>

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#55128 In pandas-dev/pandas;

· anmyachev opened on Sep 13, 2023

BUG: <code>Timestamp.to_julian_date()</code> does not take into account timezone

Bug

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#54763 In pandas-dev/pandas;

· danmoser opened on Aug 25, 2023

BUG: <code>pd.Timestamp()</code> only raises for nonexistent times when instantiated using str <code>ts_input</code>

Bug

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#54702 In pandas-dev/pandas;

· leonoverweel opened on Aug 23, 2023