Why your Fitbit time drifts and how to set it right

Your Fitbit displays the wrong time for one of three reasons: it lost connection to your phone, the automatic time sync failed, or you crossed a time zone and the device didn't update. The fix depends on which happened, but the fastest route is almost always to open the Fitbit app on your phone, check that Bluetooth is on, and let the two devices talk to each other for 30 seconds. If that doesn't work, you can set the time manually in the app's settings — a process that takes about two minutes and requires no technical knowledge.

The reason this matters: your Fitbit uses the correct time to log workouts, sleep, and activity streaks. If the time is wrong by hours, your data gets scattered across the wrong dates, and any reminders or alarms you've set will fire at the wrong moment.

Key Takeaways

  • The fastest fix is to open the Fitbit app, make sure Bluetooth is turned on, and wait 30 seconds for automatic sync to correct the time.
  • If automatic sync doesn't work, you can manually set the time in the Fitbit app by going to your device settings and selecting the time zone.
  • Fitbits that have lost Bluetooth connection to your phone will not update the time until they reconnect.
  • Crossing a time zone requires you to either wait for automatic sync or manually update the time zone in the app — the device will not detect the change on its own.

Let automatic sync fix the time first

Open the Fitbit app on your phone. At the bottom of the screen, tap the profile icon (usually a circle with your initials or a silhouette). Scroll down and tap your device name — for example, "Fitbit Charge 6" or "Fitbit Sense 2".

Make sure Bluetooth is turned on in your phone's settings. Then return to the Fitbit app and look at the top of the screen. You should see a green dot or a checkmark next to your device name, which means it's connected. If you see a red dot or a warning icon, your phone and Fitbit are not talking to each other. Turn Bluetooth off and back on, wait 10 seconds, then open the Fitbit app again. Once the connection is solid, wait another 30 seconds without closing the app. The Fitbit will pull the correct time from your phone automatically during this window.

Check your Fitbit's screen. The time should now match your phone. If it does, you're done. If it still shows the wrong time after waiting a full minute, move to the next section.

Manually set the time zone in the Fitbit app

Open the Fitbit app and go to your profile (the icon at the bottom). Tap your device name. Scroll down until you see "Time Zone" or "Time" — the exact label depends on which Fitbit model you own, but it will be in this settings section.

Tap on the time zone field. A list of time zones will appear, organized by region and city. Find your current time zone — for example, "Eastern Time (US & Canada)" or "Pacific Time (US & Canada)" — and tap it. The app will when ready send this information to your Fitbit.

Your Fitbit should update within a few seconds. If the time on your device's screen still looks wrong, close the Fitbit app completely (swipe it away from your recent apps), wait 10 seconds, and open it again. Sometimes the display takes a moment to refresh.

What to do if you crossed a time zone

When you travel to a different time zone, your Fitbit does not automatically detect the change the way your phone does. You have to tell it where you are. Open the Fitbit app, go to your device settings, and change the time zone to match your new location using the steps above. Your Fitbit will update within seconds.

If you're traveling for only a day or two and plan to return home, you can leave the time zone as your home location. Your activity will log correctly either way — the Fitbit records the actual time that passed, not the clock time. The only difference is whether your workout shows up on today's date or tomorrow's date in the app.

Bluetooth connection is the root cause

If your Fitbit keeps showing the wrong time even after you've manually set it, the problem is usually that Bluetooth keeps dropping. Your Fitbit syncs the time whenever it connects to your phone, and if that connection is unstable, the sync fails partway through.

Check that your phone's Bluetooth is on and that your Fitbit is within 30 feet of your phone. If you're using an older Fitbit model (more than four years old), try unpairing and re-pairing it with your phone. Open the Fitbit app, go to your device settings, scroll to the bottom, and tap "Unpair This Device." Then go through the setup process again as if you were adding a new device. This usually fixes connection problems that cause time sync to fail.

Fitbit models with GPS handle time differently

If you own a Fitbit with built-in GPS — such as the Charge 6, Sense 2, or Ionic — the device can pull the time from GPS satellites in addition to your phone. This means it's less likely to show the wrong time, but it also means the fix is slightly different. GPS-enabled Fitbits will update their time automatically when they have a clear view of the sky, even without Bluetooth connection.

If your GPS Fitbit shows the wrong time indoors, the fastest fix is still to sync through the Fitbit app. If you're outdoors and the time is still wrong after 10 minutes, go back inside, open the Fitbit app, and manually set the time zone. The GPS will take over once you're outside again.

Preventing time drift in the future

Keep Bluetooth on and check the Fitbit app at least once a week. This gives your device a regular chance to sync with your phone and correct any small time drift that builds up. If you notice the time is off by more than a few minutes, sync when ready rather than waiting — small drifts are normal, but large ones suggest a connection problem that will get worse.

If you travel frequently across time zones, get in the habit of opening the Fitbit app and updating the time zone as soon as you arrive. It takes 30 seconds and prevents your activity log from getting scattered across the wrong dates.

Frequently Asked Questions

Why does my Fitbit time change by itself?

Your Fitbit syncs with your phone whenever Bluetooth connects, pulling the correct time from your phone's clock. If your phone's time is wrong, your Fitbit will match it. Check that your phone's time is correct first, then sync your Fitbit. If your phone is right but your Fitbit keeps drifting, Bluetooth is disconnecting and reconnecting, which interrupts the sync.

Does my Fitbit automatically update for daylight saving time?

Yes, if Bluetooth is on and your Fitbit syncs with your phone regularly. Your phone updates for daylight saving time automatically, and your Fitbit pulls that change during the next sync. If your Fitbit is still on the old time after daylight saving time changes, manually update the time zone in the app to force an when ready sync.

Can I set the time on my Fitbit without the app?

No. Fitbits do not have a built-in menu to change the time directly on the device. You must use the Fitbit app on your phone to set or correct the time. The only exception is if your Fitbit has GPS, which can pull the time from satellites, but this takes several minutes outdoors and is slower than using the app.

What if the time zone setting doesn't appear in my Fitbit app?

Older Fitbit models (Fitbit One, Fitbit Flex, Fitbit Charge HR) may not have a time zone setting in the app. For these devices, the time syncs automatically from your phone and cannot be manually adjusted. If the time is wrong, make sure your phone's time is correct, turn Bluetooth off and on, and wait 30 seconds for sync to complete.