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what do you do if the day of the week and date in the Thunderbird calendar are off by 1 day?

David Preves

The Thunderbird calendar, displayed by the week, Saturday June 27-Friday July 3, 2026 in my computer says today is Monday, Jun 28, whereas it is really Jun 29. Each day in the calendar is off by 1 day. e.g. tomorrow it says Tuesday Jun 29, etc. If I change the view to Multiweek, the dates and days of the week line up as 2 June 29s for Monday and Tuesday!. Wednesday becomes June 30 and Thursday skips July 1 and is July 2! What to do to correct all of these problems? Thanks, [edited email from public]

The Thunderbird calendar, displayed by the week, Saturday June 27-Friday July 3, 2026 in my computer says today is Monday, Jun 28, whereas it is really Jun 29. Each day in the calendar is off by 1 day. e.g. tomorrow it says Tuesday Jun 29, etc. If I change the view to Multiweek, the dates and days of the week line up as 2 June 29s for Monday and Tuesday!. Wednesday becomes June 30 and Thursday skips July 1 and is July 2! What to do to correct all of these problems? Thanks, [edited email from public]

Endret av James

All Replies (1)

I can't quite visualize from your description, but normally Thunderbird gets its time and date information from the operating system. So, the first thing to check would be the OS's time and locale settings.

Calendar can also be told to ignore the OS time zone settings. There are also some other Calendar settings that could affect the way it's displayed, although I wouldn't think any of them would cause incorrect dates. Those settings are found at <Settings | Calenda>.

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