This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

Bad timezone in Firefox

  • 2 replies
  • 0 have this problem
  • 7 views
  • Last reply by cor-el

svecpetr
svecpetr
more options

Again, again, again... FIREFOX USES BAD TIMEZONE SETTINGS.

Again is after updates set timezone to UTC

See result from console: console.log(Intl.DateTimeFormat().resolvedOptions().timeZone)

FIREFOX >> UTC CHROME >> Europe/Prague

Or see this (new Date()).toLocaleString(); FiREFOX >> "24. 11. 2022 10:13:39" CHROME >> "24. 11. 2022 11:13:39"

See enclosure

And problem is that privacy.resistFingherpringing si FALSE

THAT IS HUGE PROBLEM, BECAUSE MANY OF SYSTEMS DID NOT WORK CORRECTLY!!!

Again, again, again... FIREFOX USES BAD TIMEZONE SETTINGS. Again is after updates set timezone to UTC See result from console: console.log(Intl.DateTimeFormat().resolvedOptions().timeZone) FIREFOX >> UTC CHROME >> Europe/Prague Or see this (new Date()).toLocaleString(); FiREFOX >> "24. 11. 2022 10:13:39" CHROME >> "24. 11. 2022 11:13:39" See enclosure And problem is that privacy.resistFingherpringing si FALSE THAT IS HUGE PROBLEM, BECAUSE MANY OF SYSTEMS DID NOT WORK CORRECTLY!!!
Attached screenshots

All Replies (2)

Dropa
Dropa
more options

Are you using VPN or Proxy settings. Those can change your location settings. Also check you O/S setting for time zones as well.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Are you possibly using Resist Fingerprinting?

When Resist Fingerprinting is enabled then some items are spoofed (TimeZone: UTC, UserAgent: platform: Win10).

You can check this pref on the about:config page to see if Resist Fingerprinting is enabled and if this pref is user set (bold) reset to false via the right-click context menu.

  • privacy.resistFingerprinting = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.