On which day does the Tropic of Cancer experience the most direct sunlight?

The Tropic of Cancer experiences the most direct sunlight on the summer solstice, which typically occurs around June 21st in the Northern Hemisphere. During this time, the North Pole is tilted closest to the sun, resulting in the sun's rays striking the Tropic of Cancer at a near-perpendicular angle. This maximizes solar radiation in that region, leading to longer daylight hours and warmer temperatures.

In contrast, during the winter solstice, the sun is at its Southernmost point relative to the Tropic of Cancer, leading to less direct sunlight and shorter days. On the spring and fall equinoxes, the sun is positioned directly above the equator, resulting in roughly equal day and night lengths globally, but not specifically in direct alignment with the Tropic of Cancer. Thus, the most intense solar exposure for this latitudinal line occurs during the summer solstice.