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UTC-4 parsed to +04:00

Status: Open.

#1478 In dateutil/dateutil;

· c-leber opened on Apr 6, 2026

Issue with Python 3.15 alpha 7 and build of docs

bug

build

documentation

Status: Open.

#1472 In dateutil/dateutil;

· frenzymadness opened on Mar 23, 2026

FREQ=YEARLY with BYMONTHDAY but no BYMONTH expands to every month instead of DTSTART month (RFC 5545 non-compliance)

Status: Open.

#1452 In dateutil/dateutil;

· laydros opened on Jan 31, 2026

Vulnerability Disclosure

Status: Open.

#1450 In dateutil/dateutil;

· tsigouris007 opened on Jan 7, 2026

dayfirst implementation bug

Status: Open.

#1448 In dateutil/dateutil;

· bernd-wechner opened on Dec 23, 2025

parser.parse fails on "year:month:day h:m:s"

Status: Open.

#1447 In dateutil/dateutil;

· lovely-fafa opened on Dec 5, 2025

Parser cannot handle common datetime format used in image metadata

Status: Open.

#1446 In dateutil/dateutil;

· fizbin opened on Nov 28, 2025

default parser fails to parse 9-digit time string as HHMMSSmmm format

Status: Open.

#1442 In dateutil/dateutil;

· HydrogenDeuterium opened on Oct 16, 2025

Infinite loop in rrule.py

Status: Open.

#1441 In dateutil/dateutil;

· jmbarbier opened on Oct 2, 2025

Typeerror while trying to interate over rrule

Status: Open.

#1438 In dateutil/dateutil;

· owenhollands opened on Sep 7, 2025

OverflowError: timestamp out of range for platform time_t

Status: Open.

#1436 In dateutil/dateutil;

· pbiering opened on Aug 23, 2025

deadlock in parser.parse()

Status: Open.

#1433 In dateutil/dateutil;

· rwhit opened on Jul 22, 2025