Singapore doesn't observe daylight saving time but San Diego does. DST in San Diego started on 10 March 2019 and will end on 03 November 2019. Once DST ends in San Diego the time difference between San Diego and Singapore will be 16:0 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: SGT - Singapore Time (UTC/GMT +8)Time zone difference / Flight distance