The Tropic of Cancer is the Earth's northernmost circle of latitude where the Sun can be seen directly overhead at noon. This occurs at the June solstice, when the Northern Hemisphere is tilted toward the Sun to its maximum extent. It is currently located at approximately 23°26′ north of the Equator (about 23.44°N) and marks the northern boundary of the Earth's tropical zone, which lies between the Tropic of Cancer and the Tropic of Capricorn in the Southern Hemisphere
. This latitude line runs across several countries including Mexico, North Africa, Saudi Arabia, India, Myanmar, and southern China. The name "Tropic of Cancer" comes from the fact that, thousands of years ago, the Sun was in the constellation Cancer when it was directly overhead at this latitude during the June solstice, although due to the precession of the equinoxes, this is no longer the case today
. In summary, the Tropic of Cancer is significant because it marks the northernmost point where the Sun can be directly overhead, influencing climate and daylight patterns in the tropics
