How to call Greenland from the USA or from Canada:

dial 011 + 299 + phone number

Calling from another country?

The time in Nuuk, Greenland is now 07:39:18pm

This country uses multiple time zones

Calling Greenland from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
299 - Country Code for Greenland
Phone Number - 6 digits
US to Greenland international dialing format: 011 299 ??? ???

How to dial to Greenland cellular:

dialing format for calls to a cell phone: 011 299 X?? ???
X can be 2, 4 and 5 for most cell phone numbers