Pioneer AVIC-S1 - Manual (Page 17)

User's manual AVIC-S1
Using the Navigation System for the First Time - 15 -
4. Tap on the time zone that applies to your location. You can
scroll through the list with the buttons Up and Down. The
display of cities for the respective time zone is meant as an
aid for choosing the correct time zone.
Summer Time The S UMMER TIME window opens.
5. Specify whether it is currently summer time (Yes) or (No).
Time Format The T IME FORMAT window opens.
6. Specify whether times should be displayed in Anglo-Saxon
12-hour format (12hr) or in European 24-hour format
(24hr).