We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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 can I change the way time is displayed in firefox?

more options

Currently it's showing a 24-hour clock, I want it to show a 12-hour clock. Co-workers on the same web site, using Firefox, have the 12-hour clock. It appears to be ONLY this one website and ONLY in Firefox, the site has the 12-hour clock when I work in Google Chrome.

Currently it's showing a 24-hour clock, I want it to show a 12-hour clock. Co-workers on the same web site, using Firefox, have the 12-hour clock. It appears to be ONLY this one website and ONLY in Firefox, the site has the 12-hour clock when I work in Google Chrome.

All Replies (1)

more options

Is it a website you could share a link to, that doesn't require a login?

If the time format is determined locally by a script in Firefox, instead of on the server, Firefox should follow your regional settings in the Windows Control Panel. I have attached a screenshot for comparison.

If the time is determined on the server, try clearing your cookies for the site in case the preference is somehow stored there. While viewing a page on the site, try either:

  • right-click (on Mac Ctrl+click) a blank area of the page and choose View Page Info > Security > "View Cookies"
  • (menu bar) Tools > Page Info > Security > "View Cookies"
  • click the padlock or "i" icon in the address bar, then the ">" button, then More Information, and finally the "View Cookies" button

In the dialog that opens, the current site should be pre-filled in the search box at the top of the dialog so you can remove that site's cookies individually.

Then try reloading the page. Does that make any difference?