Seoul doesn't observe daylight saving time but Vatican City does. DST in Vatican City started on 31 March 2019 and will end on 27 October 2019. Once DST ends in Vatican City the time difference between Seoul and Vatican City will be -8:0 hours.
Time zone: KST - Korea Standard Time (UTC/GMT +9)Time zone difference / Flight distance
Time zone: CEST - Central European Summer Time (UTC/GMT +2)DST started on 31 March 2019DST will end on 27 October 2019Time zone difference / Flight distance