Greenland has held parliamentary elections since 1979 when the Home-Rule act came into force.
Also, terms can be cut short if a government finds a majority against it or if the sitting prime minister decides to call one, and this is fairly normal.
For example, an election came unexpectedly in April 2021, as the administration that had been running since 2014 by Kim Kielsen of the Siumut Party, due to the withdrawal of one of its coalition partners, Demokraait.
This means that Greenland is a part of Denmark's international territory that has a degree of autonomy and self-governance under a national government.
On the other hand, some politicians want to keep a strong union with Denmark and remain an autonomous territory.