William Jennings Sheffield, Jr. (born June 26, 1928) is an American Democratic politician who was the fifth Governor of Alaska from 1982 to 1986. Sheffield's term in the governor's mansion was marked by controversy including attempts to have him impeached.While governor, Sheffield pushed an unpopular bill through the state legislature to consolidate Alaska's time zones. Prior to the passage of this bill, Alaska was spread over four time zones (Pacific, Yukon, Alaska-Hawaii, and Bering).