Thomas G. Shanks (born April 9, 1942, in Lima, Ohio) is an American computer programmer, author, and time zone history researcher.
Work While working for a San Diego–based astrological computing company as programmer and research director, Shanks did extensive research in the field of worldwide time zone and daylight saving time history. He published the results of this research in the two volumes The American AtlasThe American Atlas: US latitudes and longitudes, time changes, and time zones, San Diego 1978, ACS publications and The International Atlas.The International Atlas: World latitudes, longitudes, and time changes, San Diego 1985, ACS publications Shanks' published data are quoted frequently in the public domain IANA time zone database.
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