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Twilight is the time between darkness and sunrise in the morning, and sunset and complete darkness in the evening, when there is light outside, but the Sun is below the horizon. There are 3 types of twilight: civil, nautical, and astronomical. Dubai skyline in twilight.
There has been no sunlight or even twilight since early October. The darkness lasts until the beginning of dawn in early March. The sun rises at the North Pole on the Spring Equinox, approximately March 21, and the sun rises higher in the sky with each advancing day, reaching a maximum height at the Summer Solstice, approximately June 21.