Antarctic Circle -

The primary significance of the Antarctic Circle is astronomical. It marks the northernmost latitude in the Southern Hemisphere where the sun can stay above the horizon for a full 24 hours—a phenomenon known as the . Conversely, during the winter solstice, it is the northernmost point where the sun does not rise at all, resulting in Polar Night .

The sun remains below the horizon at noon. Geography and Climate antarctic circle

The Antarctic Circle: Earth’s Southernmost Frontier The is one of the five major circles of latitude that mark maps of our planet. Located at approximately 66°33′39″ South , it serves as the invisible boundary to one of the most extreme and mysterious environments on Earth. An Astronomical Boundary The primary significance of the Antarctic Circle is

The sun remains visible at midnight.