Dubai doesn't observe daylight saving time but Las Vegas does. DST in Las Vegas started on 10 March 2019 and will end on 03 November 2019. Once DST ends in Las Vegas the time difference between Las Vegas and Dubai will be 12:0 hours.
Time zone: PDT - Pacific Daylight Time (UTC/GMT -7)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