The Tropic of Cancer is an imaginary line that encircles the Earth, approximately 23.5 degrees north of the equator.
It marks the northernmost point where the Sun can be directly overhead during the summer solstice in the Northern Hemisphere.
In other words, it is the northern boundary of the tropical zone, where the Sun is highest in the sky and days are longest. This line has an impact on the climate and the distribution of seasons in nearby regions and is an important reference for geography and astronomy.
