Question

Which place see the noon sun exactly overhead twice a year and why?

Answer 1

Delhi and another city but I forget that

Answer 2

During the year, the latitude at which the sun is directly overhead cycles between the tropic of cancer and the tropic of capricorn. Any place within the tropics will see the sun overhead at noon twice each year. The tropics themselves will see it only once each year. Outside the tropics, the sun will never be directly overhead. In the northern hemisphere, the sun will be directly south at noon.
The two places are Ahemdabad and Kolkata.