Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
Log in
Add-on icon

Force 24-Hour Time Format EVERYWHERE version history - 3 versions

Force 24-Hour Time Format EVERYWHERE by dw5

Rated 4.8 out of 5
4.8 Stars out of 5
5
4
4
1
3
0
2
0
1
0
Force 24-Hour Time Format EVERYWHERE version history - 3 versions
  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 2.2.0.0

    Released Oct 25, 2026 - 25.01 KB
    Works with firefox 109.0 and later
    2.2 – Popup settings, many more time formats, faster

    New: toolbar popup
    • Turn conversion off for a site; the original times come back right away
    • Settings for "This site" or "All sites" (a site can override the defaults)
    • Rule switches: ranges (3–6 pm), hour only (8 AM), dot separator (8.00 am), a/p shorthand (8:30p)
    • Output: keep the site's separator (08.00) or always use a colon (08:00)
    • See what was converted on the page, and by which rule

    More formats converted
    • Dots instead of colons: 8.00 am → 08.00
    • a.m. / p.m. / A.M., "8AM", "8 AM - 12 PM"
    • Hour only: "Opens 8 am" → "Opens 08:00"
    • Google Maps / Search style ranges: 9:30–1 pm → 09:30–13:00, 3–6 pm → 15:00–18:00
    • Seconds: 11:59:30 PM → 23:59:30

    Fewer mistakes
    • Leaves prices, fractions, dates and words alone ($5 pm, 1/8 AM, 2023-10-5 pm, "Room 8a", 3 PM's)
    • Doesn't treat the German word "am" as a time on German pages
    • Text you type in editors (e.g. Discord's message box) is no longer touched
    • No more stray or missing periods after "a.m."

    Faster
    • Only changed parts of the page are checked, instead of rescanning the whole page twice a second
    • Converted before the page is drawn, so 12-hour times don't flash first
    • Now also works inside iframes and web components

    Permissions: only "storage" (for your settings). No data is collected.

    Source code released under MIT License

    Download Firefox and get the extension
    Download file
  • Older versions

    Version 2.0.0.1

    Released May 19, 2023 - 39.33 KB
    Works with firefox 109.0a1 and later
    Standardize with Chrome store release, and sync up with GitHub contents

    Source code released under MIT License

    Download file
  • Version 2.0

    Released May 18, 2023 - 41.67 KB
    Works with firefox 48.0 and later, android 48.0 to 68.*

    Source code released under All Rights Reserved

    Download file
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.