Residents of Utqiaġvik, Alaska are about to say goodbye to the sun until late January. The town is technically part of the Arctic Circle and will be experiencing what is known as the polar nights. This can have a major effect on people’s emotions, with vitamin D and light therapy lamps being a common treatment of choice. For the next two months, the Sun’s center will stay within 6 degrees below the horizon…and that’s during the sunnier hours.
It's not always dark though. These same folks have to deal with a scorching “midnight sun” during the summer months that brings with it 24 hours of straight sunlight, day in and day out. During that period, locals trade in their light lamps for blackout curtains.
Source: NY Post