There is also a period of total dark around midwinter, the 21. The length of this period varies with the latitude. For instance Harstad had midnight-sun from 22. May to 21. July, whilst Longyearbyen on Svalbard had midnight-sun from April to September.
Most tourists come to see the midnight sun, but the Total Dark can also be worth an experience.
Despite the name, it is never totally dark on mainland Norway, but in the period around midwinter, 21. December, the sun never rises above the horizon in Northern Norway. At these times, the only light during the day is a red coloured light around noon. These times are great for viewing the Northern Lights. The Northern Lights is particles from the sun burning in the atmosphere.