Singapore doesn't observe daylight saving time but Unalaska does. DST in Unalaska started on 10 March 2019 and will end on 03 November 2019. Once DST ends in Unalaska the time difference between Unalaska and Singapore will be 17:0 hours.
Time zone: AKDT - Alaska Daylight Time (UTC/GMT -8)DST started on 10 March 2019DST will end on 03 November 2019Time zone difference / Flight distance
Time zone: SGT - Singapore Time (UTC/GMT +8)Time zone difference / Flight distance