antarctic circle
the line of latitude 66° 34′ S (often taken as 66.5° S); along this line the sun does not set on the day of the summer solstice, and does not rise on the day of the winter solstice.
Topic(s):
climatology and meteorology

Note: This web application is optimized for desktop and laptop use. It might not display or function as intended on a mobile device. Opening the application directly may give better results.