Patent ID: 7224643

Claim:
A method of adjusting a clock time setting in a vehicle using a global positioning satellite system including an in-vehicle communication module, a memory in operable communication with the communication module and storing geographical data corresponding to time settings for regional time zones, and a vehicle operator interface that is coupled to the vehicle communication module, the method comprising the steps of: determining in which of the regional time zones the vehicle is located; detecting a difference between the vehicle clock time setting and the time setting for the regional time zone in which the vehicle is located; adjusting the vehicle clock time setting if the communication module is set at an automatic clock adjustment configuration; determining whether the vehicle is set to an operative or inoperative setting if the communication module is not set at an automatic clock adjustment configuration; sending a clock adjustment prompt to the vehicle operator interface if the communication module is not set at an automatic clock adjustment configuration and the vehicle is set to an inoperative setting; and delaying the clock adjustment prompt until the vehicle is set to an inoperative setting if the communication module is not set at an automatic clock adjustment configuration.