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The clock on your navigation device is automatically synchronised with the satellite clocks. You can also set the clock manually, for example when the device is indoors and unable to receive a satellite signal. The default setting is to automatically adjust the clock for the current time zone.
How to change clock settings
To select the time format and to set the time, follow these steps:
Open the Main menu and tap Settings.
In the Settings menu, tap Set clock.
Select how the time should be displayed, then tap Next.
When you do not have a satellite signal, you are asked if you want to set the time manually.
Note: Since you need to be outside for your navigation device to receive a satellite signal, you might want to immediately set the time manually. The device will then set the time automatically when you next take the device outside.
Tap Yes to set the time manually or tap No to set your device to update the time automatically using GPS satellites.