Time zones of Greenland

Greenland
North America

Time zone of Thule: UTC-4
AST — Atlantic Standard Time

Time zone of Thule (summer time): UTC-3
Summer time: Start — last Sunday in March at 1 am UTC, End — last Sunday in October at 1 am UTC.

Time zone of Central Greenland: UTC-3
CGT — Central Greenland Time

Time zone of Central Greenland (summer time): UTC-2
Summer time: Start — last Sunday in March at 1 am UTC, End — last Sunday in October at 1 am UTC.

Time zone of Scoresbysund: UTC-1
EGT — Eastern Greenland Time

Time zone of Scoresbysund (summer time): UTC+0
Summer time: Start — last Sunday in March at 1 am UTC, End — last Sunday in October at 1 am UTC.