Osaka doesn't observe daylight saving time but Zurich does. DST in Zurich started on 31 March 2019 and will end on 27 October 2019. Once DST ends in Zurich the time difference between Osaka and Zurich will be -8:0 hours.
Time zone: JST - Japan 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