Patent ID: 7443767

Claim:
A method for updating an electronic schedule by a device, comprising the steps of: connecting to least one of a group consisting of a telecommunication switching system or a data switching system by the device upon arriving at a new location wherein the group consisting of a telecommunication switching system or a data switching system is in a same time zone as the device; receiving time zone information from at least one of a group consisting of the telecommunication switching system or the data switching system by the device wherein the received time zone information is the time zone in which the at least one of a group consisting of the telecommunication switching system or the data switching system is located; comparing a present time zone in use by the device with the received time zone information to detect a time zone change; notifying a user of the device of the time zone change by the device; and allowing the user to determine if the electronic schedule will be adjusted for the time zone change by limiting the adjustment of the electronic schedule to only a time period of the electronic schedule whereby the remainder of the electronic schedule not in the time period is not effected.