Singapore doesn't observe daylight saving time but St. Louis does. DST in St. Louis started on 10 March 2019 and will end on 03 November 2019. Once DST ends in St. Louis the time difference between St. Louis and Singapore will be 14:0 hours.
Time zone: CDT - Central Daylight Time (UTC/GMT -5)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