Dates, times and time zones

What it is

Three small rules that decide how any date or time you type, import or pick is read and shown. They apply across tasks, alarms, reminders, scheduled messages, the calendar and any spreadsheet you import.

Where to find it

Everywhere a date or a time is entered: the due-date control on a task, the alarm and reminder editors, the scheduled-message composer, the calendar's quick add, and the import screens that read a date column out of a file. There is no separate settings page — the rules are always on, and the 12-or-24-hour choice comes from the language you have already selected.

How it behaves

• A two-digit year means the 2000s. 11/4/26 is 4 November 2026. A four-digit year is taken exactly as written, so type the full year when you mean 1926.
• A time that a daylight-saving change skips moves forward. On the spring change an hour disappears; a 2:30 AM alarm that morning rings at 3:30 AM, and a task due at 2:30 AM is due at 3:30 AM — the same answer your computer gives. The scheduling screens warn you when you pick a time that does not exist that day.
• A time that happens twice uses the first one. On the autumn change 1:30 AM occurs twice and Omniscio takes the earlier.
• The picker follows your language. A 24-hour language such as German or British English gets 00 to 23 and no AM/PM control; US English gets 1 to 12 plus AM/PM. What is saved is the same either way.
• A spreadsheet date that cannot be a real date is reported, not guessed. A malformed year in a date column is listed as unreadable so you can fix the file, instead of being quietly shifted.

Related

• Language support — the language setting that decides the hour cycle.
• Calendar & scheduling — events, including events in another time zone.