Recurrence

Recurrence Rules

OpenTask uses RFC 5545 RRULE strings (the iCalendar recurrence standard) to define repeating schedules.

Examples

Pattern	RRULE
Every day	FREQ=DAILY
Every weekday	FREQ=WEEKLY;BYDAY=MO,TU,WE,TH,FR
Every Monday	FREQ=WEEKLY;BYDAY=MO
Every month on the 1st	FREQ=MONTHLY;BYMONTHDAY=1
Every 2 weeks	FREQ=WEEKLY;INTERVAL=2

Completion Behavior

Recurring tasks advance in place rather than being archived:

1. You complete a daily 9 AM task
2. The task stays active with done = 0
3. due_at advances to tomorrow at 9 AM
4. The completion is logged for history and stats

This means your recurring tasks always stay in your active list. You never need to recreate them.

Timezone Handling

Recurring tasks preserve their intended local time across DST (Daylight Saving Time) transitions. A task due at 9 AM stays at 9 AM local time when clocks change.

Snooze Interaction

Snoozing a recurring task only affects the current occurrence — it changes due_at without modifying the recurrence rule. When completed, the next occurrence is always computed from the RRULE, not the snoozed time.