Santo Domingo doesn't observe daylight saving time but Cheyenne does. DST in Cheyenne started on 10 March 2019 and will end on 03 November 2019. Once DST ends in Cheyenne the time difference between Cheyenne and Santo Domingo will be 3:0 hours.
Time zone: MDT - Mountain Daylight Time (UTC/GMT -6)DST started on 10 March 2019DST will end on 03 November 2019Time zone difference / Flight distance
Time zone: AST - Atlantic Standard Time (UTC/GMT -4)Time zone difference / Flight distance