Here's why:
* Earth's Tilt: The Earth's axis is tilted at approximately 23.5 degrees. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year.
* Arctic Circle: The Arctic Circle is an imaginary circle around the North Pole, marking the latitude at which the sun remains above the horizon for 24 hours at least once a year during the summer solstice.
* Midnight Sun: During the summer solstice (around June 21st), the sun never sets north of the Arctic Circle. The period of continuous daylight can last for several weeks, depending on how far north you are.
Therefore, the places where the sun never sets from March 20th to September 23rd are located within the Arctic Circle, experiencing the midnight sun phenomenon.