Polar night

A period of night that lasts for at least 24 hours is called a polar night. It means that for minimum 24 hours the Sun remains below the horizon. Polar night can be experienced at latitudes above the Arctic Circle (66.5629° or 66°33’46.6’’ N) and below the Antarctic Circle (66.5629°S or 66°33’46.6’’S).

Due to the phenomena of twilight, we distinguish different kinds of polar night depending on the type of twilight.

European Union flag This project (EDU-ARCTIC) has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 710240. The content of the website is the sole responsibility of the Consortium and it does not represent the opinion of the European Commission, and the Commission is not responsible for any use that might be made of information contained.