To set time and date formats: 1) Press center orange button to turn unit on. 2) Press left button where the menu should come up. 3) Press right button to scroll to SETTINGS, then press center orange button. 4) use right button to scroll down to GENERAL, then press center orange button., 5) select SYSTEM and press center orange button. 6) From there you can select whether to automatically adjust to Daylight Savings Time, the date format, and the time format.

The time and date are set by the GPS when you acquire the satellite signals.