What does the term "midnight sun" refer to in geography?

The midnight sun is a natural phenomenon that occurs during summer months in regions north of the Arctic Circle or south of the Antarctic Circle. During this period, the sun remains visible even at midnight, creating continuous daylight for an extended duration. This occurs due to the tilt of the Earth's axis relative to its orbital plane around the sun, causing the polar regions to experience prolonged exposure to sunlight during their respective summer months.