After more than two months of 24-hour daylight, the Sun is due to set in Utsjoki, Finnish Lapland, on Monday night, according to the Ursa Astronomical Association.
Utsjoki's endless daylight hours began on 16 May.
However, it is still relatively bright all night long in the far northern municipality, as sunrise and sunset occur when the geometric center of the sun dips half a degree below the horizon.
On Monday night, the Sun will set in Utsjoki at 12:25 am (on Tuesday) and rise again less than two hours later, at 2:00 am.
Ursa said the final night of full darkness along the southern coast of Finland was on 11 May. The period of daylight hours in southern areas lasts for more than two-and-a-half months.
The Ursa association is the oldest and largest group of amateur astronomers in Finland, with around 19,000 members.