Where does the sun strike directly overhead at the zenith on the Tropic of Cancer?

The Sun strikes directly overhead at the zenith specifically at the Tropic of Cancer during the summer solstice, which occurs around June 21st each year. This is the time when the Northern Hemisphere is tilted most directly toward the Sun, resulting in the Sun’s rays reaching this latitude at a perpendicular angle at noon.

At this latitude, the phenomenon of the Sun being directly overhead only happens once a year, making the summer solstice the key date for this occurrence. Other times of the year, the Sun will not be directly overhead at the Tropic of Cancer due to the tilt of the Earth's axis and its orbit around the Sun. Consequently, while the Sun does move as the Earth revolves around it, the direct overhead position at the Tropic of Cancer is singularly tied to the summer solstice in June.