How far north and south do the direct rays reach on the earth?

The direct rays of the sun reach their northernmost point at the Tropic of Cancer, located at approximately 23.5 degrees north latitude, during the summer solstice. Conversely, they reach their southernmost point at the Tropic of Capricorn, around 23.5 degrees south latitude, during the winter solstice. Between these two tropics, the sun's rays are direct at noon during the corresponding solstices.