The Midnight Sun is just that — when the sun is visible at 12 am. Head north of the Arctic Circle at the height of summer and you’ll find yourself in its constant golden glow, 24/7. The magic latitude is 66 degrees 33' N, cutting through the northernmost countries on the globe, including Iceland, Sweden, Finland, Russia, and Norway, known as the Land of the Midnight Sun.
The optimal time to see the natural phenomenon is from June 21 to July 1. The Midnight Sun lasts longer the further north you go, though. For example, in the Norwegian archipelago of Svalbard, more than 500 miles north of mainland Norway, the Midnight Sun shines from April 20 to August 22.