what time zone is ohio on
Ohio is in the Eastern Time Zone in the United States of America (USA). Eastern Standard Time ( EST ) is 5 hours behind Greenwich Mean Time ( GMT-5 ). Like most states in the USA, Daylight-Saving Time ( DST ) is observed in Ohio , where the time is shifted forward by 1 hour to Eastern Daylight Time ( EDT ); which is 4 hours behind Greenwich Mean Time ( GMT-4 ).