For example, let's say it's noon on December 21, and the sun is directly overhead. Well, on that day the sun is above the Tropic of Capricorn, so your latitude would have to be 23.5 degrees S.

During the seven minutes on May 9, the sun will be directly overhead at noon, causing vertical objects to cast no visible shadows. The city of Nizams is likely to experience another zero shadow ...

As the official start of the astronomical winter, the sun reaches its most southerly point in the sky as seen from Earth. At noon, it appears directly overhead at the Tropic of Capricorn ...