tn the Momento M5, tap the screen to wake it if the screen is not awake.
Tap on the Menu button on the bottom left.
Tap on Settings
Tap on System Settings
Tap on Time Settings and adjust the GMT based on your specific location
The SD card will complete a reset and you should see the correct time right after.
Once you are in the time settings you should be able to adjust the year, date, hour, minutes, seconds, time zone and toggle on and off daylight savings.