Time Travel
Extension Actions
- Extension status: Featured
- Live on Store
JavaScript DateまたはIntl.DateTimeFormatオブジェクトの現在日時を、任意の日時とタイムゾーンに上書きできるようにします。
Time Travel helps you debug time-dependent frontend applications without having to change the system time.
Usage:
- Open the tab you want to change the time in.
- Click the Extensions icon in the toolbar, then click Time Travel.
- Choose a date from the calendar and edit the time if necessary, or enter a date and time directly (see examples below).
- Confirm with Enter or by clicking the "Change Date" button. In Chrome, when first activating the extension on a tab, the page needs to be reloaded once to apply the changes.
- Any JavaScript Date or Intl.DateTimeFormat in the current tab now returns the fake date/time you set. Other tabs and origins are not affected.
To restore the system time, click the extension icon and switch off the "Enable Fake Date" toggle.
When the fake date is enabled, the clock runs forward from the configured time.
You can stop the clock by switching on the "Stop Clock" toggle. The fake date will be reset to the last value you set.
Example Dates and Formats:
- 2025-04-27 12:40 - Local time
- 2025-04-27 - Midnight UTC
- 2025-03-30 00:59:55 - Assuming your system timezone is Europe/London (GMT), 5 seconds before a one-hour jump to 2 a.m. (summer time)
- 2025-04-27T12:40Z - Set local equivalent for given UTC time
- 2025-04-27T12:40+1130 - Set local equivalent for time with +11:30 timezone offset. Note that actual time zone is not changed
- 2025-03-25T12:40:00.120 - Local time with milliseconds
- 1731493140025 - UNIX timestamp
Features:
- Fakes date and time for all methods of `Date` and `Intl.DateTimeFormat` objects.
- Time can be stopped and resumed.
- Minimal permissions, only affects current tab after clicking the extension icon.
Limitations:
- Only JavaScript is affected by the extension.
- Some functionality or animations may behave strangely if the clock is stopped.
- The extension does not work in iframes with the `sandbox` attribute.
Latest reviews
- Jean-Baptiste
- Congratulations to the developper, it solved a big issue I had to test my app! Thank you very much
- Christelle PERSON
- so good
- bot bot
- The menu isn't very clear or user-friendly, but the extension works. :) It's a really useful extension for those who want to sync their VPN with the time zone of the country they're connected to. This is important for anonymity. ;) Thanks to the author for the extension. :)
- Jay Champion
- it does not do anything
- Connor Lex Long
- worked once and then stopped afterwards, really would be good if it did work more than once
- Sigma Male
- first time when I first installed it it work perfectly fine but now it just doesn't work pls fix it
- Killian
- does not work tried going back to 2023 on Neal.fun did not work tried going forward in time on polybuzz.com did not work so do not download
- Pager
- bro how long does it take to go into the future, it wont reload to the future THIS IS SO BROKEN
- DaeHun Kim
- please, please add an ability to change time automatically(So, what I mean is that you can control speed of the time. Lets say you turned on the time to go 2x. Then time changes automatically two times faster in a second.)
- Taras Misiuk
- very nice
- Amar Dewedi
- One of the best extensions when writing code that depends on the browser's time and date is its usefulness in such scenarios. However, it would be even more helpful if an option to include seconds were also available.
- Emanuel Caro
- Great tool for developers it helped me a lot, thank you!
- Rick Jepson
- This was perfect for me. The URL I had showed me the arena schedule for today. I needed it for 11 days in the future. It worked like a charm; I got the schedules for 11 days in the future and didn't have to mess up my PC changing the clock. It only affects the web page where you set the time. Thank you!
- Mark Geater
- I needed a way to test a bug on a website that only happened on Sundays, setting the system clock doesn't work as browsers see it as a security issue. This extension worked perfectly and allowed us to debug what we needed.
- Darren Allen
- Totally uaeless! Does nothing! Does nothing after activating. Every page ignores it! Does nothing after reloadin page. Does nothing after clearing data and cache. Does nothing! NOTHING!! ......except it does effectively steal valuable time from your life!!
- Margarita Korotkova
- great!!
- tren
- people think i posted in the year 0001 on bluesky 10/10
- Smirity Rani Nath
- its mid but the problem is that i cant use it
- Omotoye Iwakin
- Excellent extension. Does the work. I used it to test a behaviour on my web application that happens only on July 1st of every year.
- Steve
- Does what I need it to do for web app development, thank you! ❤️
- Saque Assis
- What is Time Machine?, Please Help Me!
- イヴ
- Nice.
- Vương Mạnh Tiến
- Good extension!
- Aviad Y
- Needed that for QA, works great
- Nick Van Aartsen
- Works fantastic. Requires a refresh in the beginning to get things started, then flawlessly updates and maintains time as expected. Only minor improvement would be if there was a more robust time picker that let me click up and down the hours/minutes, but the current interface is simple and just works, so it's hard to complain.
- Alexander Karczewski
- Doesn't work once I click the play button extension reloads the page and the website also refresh and pushs you back to the correct date and time. site work if i change the time zone on my computer but not with the extension
- Ghbctv Vjjgtv
- Does not work I am stuck on page same page when I have selected date with extention on.
- Doer
- Really great extension, exactly what I was looking for
- Abhijeet Dhanwate
- It does what it says it does.
- Vijay Narasimhan
- Great tool.
- Vijay Narasimhan
- Great tool.
- Young jin Choi
- great extension
- Young jin Choi
- great extension
- Caleb Rudnick
- ily
- Caleb Rudnick
- ily
- Luca Donno (donnoh)
- works!
- Luca Donno (donnoh)
- works!
- Andrii Taran
- Does its job right
- Andrii Taran
- Does its job right