Most often, if you move to a different time zone, the time on the Fitbit tracker device is set automatically when it's ...

While there’s a strong likelihood your Fitbit devices will be able to automatically set the time, this isn’t always the case.

On your Fitbit, choose the Alarms app. 2. Tap "+ New Alarm." If you already have existing alarms, you'll need to swipe up to see this option. 3. Tap "12:00" and then swipe to set the desired time.