Greenland, a Danish Crown dependency with its own parliament and limited self-government, is the largest island on Earth. From Cape Farewell in the south to the world's northernmost landmass, Odak Island, there is a distance of 2,670 kilometres (1,669 miles).
Measured across, the island stretches 1,050 kilometres at its widest point. Out of Greenland's 2,175,600 square kilometres, 1,833,900 are covered by inland ice, corresponding to 85% of the country – the ice-free area only covers a total of 341,700 square kilometres.
The northern location and extensive width of the northernmost part of Greenland places it in four time zones. For practical reasons, however, GMT -3 is used as the country's official time. Summer time (daylight saving time) and winter time follow the European Union system.
Central Greenland: Godthab / Nuuk
Greenland Standard Time: GMT-3
Greenland Summer (Daylight Saving) Time: GMT-2
DAYLIGHT SAVING TIME
UK and Europe Clock Change Rules
1. Danmarkshavn Area means a small area in the northeast including Germania Land and Store Koldewey Island.
Standard Time: GMT (all year)
Ittoqqortoormiit Area essentially means the peninsula on the east coast of Greenland that includes Scoresby Land, Jameson Land, and Liverpool Land.
Standard Time: GMT-1
Summer Time: GMT
Pituffik Area means the Hayes Peninsula, roughly from Savissivik to Etah, including Dundas and Thule.
Standard Time: GMT-4
Summer Time: GMT-3