How To Change Browser Timezone

To change browser timezone, you must change the time zone setting of your operating system, because every browser inherits its time and time zone from the device it runs on. This means the universal first step to fix an incorrect time in Chrome, Safari, Firefox, or Edge is to adjust the system date and time on your computer, phone, or tablet. If you are working on a ChromeOS device, you can change the time on a Chromebook directly from the settings menu.

How to change browser timezone: the system setting solution

Browsers do not have their own independent timezone controls. Instead, they rely entirely on the operating system's clock and region settings. Whether you are traveling, working remotely, or simply need to correct a wrong time display, changing the time and time zone at the system level is the only reliable method for everyday use. This approach ensures that all applications, including your browser, show the correct local time.

Change timezone on Windows to fix your browser

On a Windows PC, the browser's timezone follows the system setting. To adjust it:

1. Open the Start menu and select Settings (the gear icon).
2. Go to Time & Language, then Date & Time.
3. Turn off Set time zone automatically if it is enabled.
4. Use the dropdown menu under Time zone to select your correct region.

After making this change, restart your browser. Chrome, Firefox, Edge, and all other browsers on Windows will now report the new timezone to websites.

Change timezone on Mac to fix Safari and Chrome

macOS controls the timezone for all browsers, including Safari and Chrome. To update it:

1. Open System Settings from the Apple menu.
2. Click General, then Date & Time.
3. Unlock the settings by clicking the lock icon and entering your password.
4. Turn off Set time and date automatically if you want to set the timezone manually, or leave it on to use your current location.
5. Select your timezone from the map or the nearby city list.

Safari strictly adheres to the macOS system's date and time settings, there is no internal browser option to change its timezone. Chrome on Mac will also follow this system change immediately.

Change timezone on iPhone or iPad

On iOS, iPadOS, and Apple Vision Pro, the timezone used by Safari and other browsers is set in the system settings:

1. Open Settings.
2. Tap General, then Date & Time.
3. Toggle Set Automatically on to let the device use your current location. For manual control, turn this off.
4. Tap Time Zone and search for your city or region.

For automatic timezone updates to work reliably, ensure that Setting Time Zone is turned on in Settings > Privacy & Security > Location Services > System Services. Once set, all browsers on the device will reflect the correct time.

Change timezone on Android devices

To adjust it:

1. Open Settings.
2. Go to System, then Date & Time.
3. Turn off Use network-provided time zone if you want to set it manually.
4. Select your timezone from the list.

How to spoof your timezone for testing (developers only)

For developers who need to test how a website behaves in different timezones without changing the system clock, Chromium-based browsers like Chrome and Edge offer a built-in override. This method is not intended for everyday browsing, it is a testing tool.

Using Chrome DevTools

1. Open Chrome and press F12 or Ctrl+Shift+I (Windows/Linux) or Cmd+Shift+I (Mac) to open Developer Tools.
2. Click the three-dotted menu (top-right corner of DevTools).
3. Select More tools > Sensors.
4. In the Location section, choose a preset city or select Other to define a specific timezone.

This override affects only the current browser tab and lasts until you close DevTools or reset the sensor. The Date.prototype.getTimezoneOffset() JavaScript method will reflect the spoofed timezone during testing.

Using browser extensions

For Firefox and Edge, extensions such as Change Timezone (Time Shift) can spoof the reported timezone. For Chrome, extensions like Change Timezone for Google Chrome™ provide similar functionality. These tools override the timezone that websites see, but they do not change your system clock.

To change time zone on Chrome for testing, the DevTools method is the most reliable and does not require installing any third-party software. Remember that these spoofing techniques are for development and debugging only, for accurate daily use, always adjust your operating system's timezone instead.