Guam, Mariana Islands, USA is 1 hour behind Sydney, NSW, Australia
1:21 am Tuesday, in Guam, Mariana Islands, USA is
2:21 am Tuesday, in Sydney, NSW, Australia
See distance from Guam to Sydney
Guam doesn't observe daylight saving time but Sydney does. DST in Sydney started on 06 October 2019 and will end on 05 April 2020. Once DST ends, Guam - Sydney time difference will be 0 minute (no time difference).