The boundary is generally considered to be north of the Arctic Circle (66属 33?N), which is the limit of the midnight sun and the polar night.
Gobolka Arktik waxaa lagu sharaxaa waqooyiga Cidhifka Waqooyi (66° 33'N), taasi oo hesha iftiin qorax oo aad u kooban iyo habeeno ka dhaadheer deegaanada kale ee caalamka.