1. A method for establishing an applicable local time zone of a web browser in a computing environment by a processor device, comprising: querying a plurality of time zone offsets over a predetermined period of time to obtain a listing of possible time zones; selecting ones of the listing of possible time zones matching a polled absolute coordinated universal time (UTC) offset; 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; and sorting the listing of possible time zones based on the plurality of assigned weights.