To change the time on a Fitbit, you'll need to adjust the time zone setting for your device on the Fitbit mobile app or desktop website.

To set the time on your Apple Watch manually, you can change the time on your iPhone, or use your watch's Settings app to ...

For years now, smartphones have been clever enough to adjust the time when we change time zones. So, when you get off that plane, say, you know what time it is. Now, it looks like Google will make it ...