Vientiane doesn't observe daylight saving time but Bratislava does. DST in Bratislava started on 31 March 2019 and will end on 27 October 2019. Once DST ends in Bratislava the time difference between Bratislava and Vientiane will be 6:0 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: ICT - Indochina Time (UTC/GMT +7)Time zone difference / Flight distance