The Arctic Circle is at 66 degrees 32 minutes N latitude and marks the point on the Earth's surface where the Sun does not appear above the horizon at the Winter Solstice. It also marks the southernmost point of the Arctic Frigid Zone.
You may be thinking of the International Date Line -- 180 degrees longitude, and the Greenwich Meridian -- 0 degrees longitude.
The Arctic Circle.
The arctic circle
a latitude line
The Tropic of Capricorn passes through Botswana.
Tropic of Capricorn
The axis is an imaginary line that passes through the North and South poles. The Earth rotates on its axis, completing a full rotation each day.
the tropic of Capricorn
An imaginary line which passes through the poles of the planet.
The Tropic of Cancer passes through the Hawaiian Islands. The Tropic of Cancer is at approximately 23 degrees 30 minutes N latitude and marks the point on the Earth's surface where the Sun is directly overhead at the Summer Solstice. It also marks the northernmost point of the Tropic Zone.
You may be thinking of the Prime Meridian and the International Date Line.
Tropic of cancer.
Tropic of Cancer
Tropic of cancer.
The equator or the axis is what you're thinking of