If anyone has seen Casey Neistat's holiday video posted this week where he's lifted and pulled on a snowboard by a custom-built 16-rotor 10-foot diameter drone, they were up at some ski resort in the north of Finland, where for about 2.5 weeks in December there is NO sunrise. Just a few hours of twilight each day, basically a combined sunrise/sunset sky appearance for 3-4 hours. The next sunrise doesn't happen until 30 December, and the sun is only visible for less than 1 hour. Conversely, in July there are 24 hours of daylight.