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How do I change the time format from 24-hour format to 12-hour format, so that, for instance, the time shows as 1:00 pm instead of 13:00?

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Jack350
Jack350
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How do I change the time format from 24-hour format to 12-hour format, so that, for instance, the time shows as 1:00 pm instead of 13:00 in the Calendar for Thunderbird?

How do I change the time format from 24-hour format to 12-hour format, so that, for instance, the time shows as 1:00 pm instead of 13:00 in the Calendar for Thunderbird?

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Tonnes
Tonnes
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You’ll need to set it for your OS, since Lightning uses the OS’s time format.

See here. Also see this and this question.