The overhead sun occurs at the Tropic of Cancer on or around June 21st, which is the summer solstice in the Northern Hemisphere.
The overhead sun occurs at the Tropic of Cancer around the time of the summer solstice, which usually falls on June 21st. During this time, the sun is directly overhead at noon at the Tropic of Cancer, which is located at approximately 23.5 degrees north latitude. It marks the beginning of summer in the Northern Hemisphere.
