Issues

• RulesetIterable (dateutil.rruleset) misorders and drops occurrences when RRULE + RDATE span DST fall-back

  bug
  allenporter/ical#770 · Filter by author allenporter opened on Nov 2, 2026

• ICS DTSTART/DTEND straddling DST fall-back parses DTEND as fold=0 (inverted Timespan)

  bug
  allenporter/ical#769 · Filter by author allenporter opened on Nov 2, 2026

• Timespan & Timeline boundary bugs with zero-duration events and empty/inverted query windows

  bug
  allenporter/ical#768 · Filter by author allenporter opened on Nov 2, 2026

• Timeline and Timespan misorder/drop events during DST fall-back due to PEP 495 wall-time comparisons

  bug
  allenporter/ical#761 · Filter by author allenporter opened on Nov 1, 2026
  2

• EventStore/TodoStore: Range.THIS_AND_FUTURE UNTIL truncation edge cases and regression hazards

  bug
  allenporter/ical#744 · Filter by author allenporter opened on Oct 25, 2026

• Overridden recurring event instances with both RECURRENCE-ID and RRULE are expanded as separate recurring series

  allenporter/ical#710 · Filter by author allenporter opened on Oct 17, 2026

• Component validation order, parser hardening, and dead code cleanup

  bug
  allenporter/ical#705 · Filter by author allenporter opened on Oct 17, 2026

• Timezone, X-WR-TIMEZONE, VTIMEZONE, and TZif parser bugs

  bug
  allenporter/ical#704 · Filter by author allenporter opened on Oct 17, 2026

• Round-trip serialization & type bugs: RDATE/Period with TZID, RelatedTo RELTYPE, and Attachment base64 corruption

  bug
  allenporter/ical#703 · Filter by author allenporter opened on Oct 17, 2026

• Falsy timedelta(0) bugs: Europe/Dublin winter offset corruption, UTC+0 timezone skipping, and zero-duration crashes

  bug
  allenporter/ical#702 · Filter by author allenporter opened on Oct 17, 2026

• EventStore & TodoStore: data loss on edit/delete, Range.NONE dtstart/due bugs, and THISANDFUTURE timezone crashes

  bug
  allenporter/ical#701 · Filter by author allenporter opened on Oct 17, 2026

• Recurrence expansion: _RECURRENCE_CACHE timezone collisions and RecurrenceId parameter loss

  bug
  allenporter/ical#699 · Filter by author allenporter opened on Oct 17, 2026

• Hello from pycalendar

  allenporter/ical#697 · Filter by author niccokunzmann opened on Oct 13, 2026
  1

• RDATE-only event drops its DTSTART occurrence

  allenporter/ical#691 · Filter by author lacroixdavid1 opened on Sep 28, 2026

• Override with a UTC RECURRENCE-ID does not replace its occurrence

  allenporter/ical#690 · Filter by author 1358 opened on Sep 28, 2026

• Feature: compare two versions of the same calendar (what changed between fetches)

  allenporter/ical#677 · Filter by author proscar87 opened on Aug 15, 2026
  6

• Feature: RFC 9073 VLOCATION component support

  enhancement
  allenporter/ical#652 · Filter by author allenporter opened on Jul 10, 2026

• Feature: Alarm trigger resolution API for computing absolute alarm times

  enhancement
  allenporter/ical#651 · Filter by author allenporter opened on Jul 10, 2026

• Feature request: Add support for JSCalendar (RFC 8984)

  allenporter/ical#650 · Filter by author allenporter opened on Jul 10, 2026
  1

• Feature request: Add support for rfc7265

  allenporter/ical#649 · Filter by author allenporter opened on Jul 10, 2026
  1

• docs: guide/blog post — RFC 8536 TZif: Why Your Calendar Doesn't Know About the Latest Timezone Change

  documentation
  allenporter/ical#641 · Filter by author allenporter opened on Jul 9, 2026

• docs: guide / blog post — RECURRENCE-ID, RANGE=THISANDFUTURE, and Why Calendar Editing Is Hard

  documentation
  allenporter/ical#640 · Filter by author allenporter opened on Jul 9, 2026

• Feature: Improve lenient parsing: audit compat coverage and expand test cases

  enhancement
  allenporter/ical#637 · Filter by author allenporter opened on Jul 9, 2026
  1

• Revisit RECURRENCE-ID, RANGE, UID

  allenporter/ical#278 · Filter by author allenporter opened on Feb 1, 2024
  1

• Dependency Dashboard

  allenporter/ical#152 · Filter by author renovate opened on Jan 5, 2023