Hong Kong doesn't observe daylight saving time but Madrid does. DST in Madrid started on 31 March 2019 and will end on 27 October 2019. Once DST ends in Madrid the time difference between Madrid and Hong Kong will be 7:0 hours.
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
Time zone: HKT - Hong Kong Time (UTC/GMT +8)Time zone difference / Flight distance