A computer program product for establishing an applicable local time zone of a web browser in a computing environment, the computer program product comprising a computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:a first executable portion for querying a plurality of time zone offsets over a predetermined period of time to obtain a listing of possible time zones;a second executable portion for selecting ones of the listing of possible time zones matching a polled absolute coordinated universal time (UTC) offset;a third executable portion for assigning a plurality of weights to the selected ones of the listing of possible time zones based on at least one of the matching polled absolute UTC offset, a matching daylight savings observance type, a matching Hyper-Text Transfer Protocol (HTTP) accept-language header and a human population size; anda fourth executable portion for sorting the listing of possible time zones based on the plurality of assigned weights.