It never actually gets dark
North of the Arctic Circle the summer day lasts for weeks and months. From May to August, Northern Norway is bathed in light and it never actually gets dark.
The Midnight Sun is a natural phenomenon in which the sun is above the horizon at midnight. And the rest of the night. And all day long. At Nordkapp (North Cape) the sun stays shining in the sky for over 1,800 hours without setting.
This shot is from Kåfjord. A municipality in Troms county.