Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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
This thread was archived. Please ask a new question if you need help.
Solved Archived

How can I set the time format to 24 hours rather than AM/PM in Lightning/en? Many thanks!

Thunderbird Calendar
Herakleitos replied
Herakleitos
Herakleitos

I want to configure Lightning with 24h time format rather than AM/PM format but can't find this in the options. Thank for help!

I want to configure Lightning with 24h time format rather than AM/PM format but can't find this in the options. Thank for help!

All Replies (2)

christ1
christ1
  • Top 25 Contributor
  • Moderator

Chosen Solution

You'll need to set it for your OS. Lightning uses the OS format.

Herakleitos
Herakleitos Question owner

Thanks very much! I had changed it in the OS but not restarted the system. Now it works.