Dubai doesn't observe daylight saving time but Philadelphia does. DST in Philadelphia started on 10 March 2019 and will end on 03 November 2019. Once DST ends in Philadelphia the time difference between Philadelphia 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