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BUG: Fix inconsistency with DateOffset near DST

FrequencyDateOffsetsDateOffsets

Status: Open (in progress).

pandas-dev/pandasnumber 61870

#61870 In pandas-dev/pandas;

· arthurlw opened on Jul 16, 2025

BUG: DateOffset default temporal pattern does not work as expected with DST

Bug

FrequencyDateOffsetsDateOffsets

Status: Open.

#61862 In pandas-dev/pandas;

· ValentinBilla opened on Jul 15, 2025

BUG: Collision between equivalent frequencies 'QS-FEB' and 'QS-NOV'

Bug

DatetimeDatetime data dtypeDatetime data dtype

FrequencyDateOffsetsDateOffsets

Status: Open.

#61086 In pandas-dev/pandas;

· rwijtvliet opened on Mar 8, 2025

BUG: CustomBusinessDay not respecting calendar

Bug

FrequencyDateOffsetsDateOffsets

good first issue

Status: Open.

#60647 In pandas-dev/pandas;

· benmgrant opened on Jan 2, 2025

BUG: unable to generate daily business frequency data

FrequencyDateOffsetsDateOffsets

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

Usage Question

Status: Open.

#60596 In pandas-dev/pandas;

· ngupta23 opened on Dec 20, 2024

ENH: Add support for generating 4-4-5 but by month not just quarter or year

Enhancement

FrequencyDateOffsetsDateOffsets

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#59977 In pandas-dev/pandas;

· KuriaMaingi opened on Oct 5, 2024

BUG: PeriodIndex.to_timestamp inconsistent with its docstring

Bug

FrequencyDateOffsetsDateOffsets

Status: Open.

#59371 In pandas-dev/pandas;

· MarcoGorelli opened on Jul 31, 2024

BUG: inconsistency in the behaviour of <code>DatetimeIndex.is_year_start</code> on the frequency "BYS"

Bug

DatetimeDatetime data dtypeDatetime data dtype

FrequencyDateOffsetsDateOffsets

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

Status: Open.

#58920 In pandas-dev/pandas;

· natmokval opened on Jun 4, 2024

BUG: next_workday observance wrongly adds BDay to holidays on weekdays

Bug

FrequencyDateOffsetsDateOffsets

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

Status: Open.

#58553 In pandas-dev/pandas;

· yaoyuan12 opened on May 3, 2024

BUG: DatetimeIndex.is_year_start breaks for business-day frequency where <code>n</code> is greater than 1

Bug

FrequencyDateOffsetsDateOffsets

Status: Open.

#58524 In pandas-dev/pandas;

· MarcoGorelli opened on May 2, 2024

BUG: concatenating time series with non ns unit leads to dataframe with missing data

Bug

FrequencyDateOffsetsDateOffsets

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

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

Status: Open.

#58471 In pandas-dev/pandas;

· jorgehv opened on Apr 29, 2024

BUG: <code>pd.infer_freq</code> incompatible with <code>Series["timestamp[s][pyarrow]"]</code>.

Arrowpyarrow functionalitypyarrow functionality

Bug

DatetimeDatetime data dtypeDatetime data dtype

FrequencyDateOffsetsDateOffsets

Status: Open.

#58403 In pandas-dev/pandas;

· randolf-scholz opened on Apr 24, 2024