Sao Tome doesn't observe daylight saving time but Valletta does. DST in Valletta started on 31 March 2019 and will end on 27 October 2019. Once DST ends in Valletta the time difference between Sao Tome and Valletta will be 1:0 hour.
Time zone: GMT - Greenwich Mean Time (UTC/GMT)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