Dubai doesn't observe daylight saving time but Washington DC does. DST in Washington DC started on 10 March 2019 and will end on 03 November 2019. Once DST ends in Washington DC the time difference between Washington DC and Dubai will be 9:0 hours.
Time zone: EDT - Eastern Daylight Time (UTC/GMT -4)DST started on 10 March 2019DST will end on 03 November 2019Time zone difference / Flight distance
Time zone: GST - Gulf Standard Time (UTC/GMT +4)Time zone difference / Flight distance