Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How do I change the times from 24hr to 12hr format?

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by gild

more options

I have read in the forum that it is the pc settings I have to change on win10, but mine are set to 12hr and the calendar still shows 24hrs.

I have read in the forum that it is the pc settings I have to change on win10, but mine are set to 12hr and the calendar still shows 24hrs.

All Replies (1)

more options

Thunderbird/Lightning uses the time settings from your OS. Make sure they are correct.

If you make changes to the OS settings, you should restart your computer. Otherwise, close and re-open Thunderbird.

TB-38.3 Win10-PC