Of double happiness and disappearing shadows

Do you want to lose your shadow in the sunlight?

You can, but only for about 15 minutes at midday on June 21 or 22, in Mojiang, a small city 264 km southwest of Kunming. Around that time, the northern hemisphere is tilted toward the sun to its maximum extent. As a matter of fact, the sunlight can shoot its beams into a tiny hole.

Mojiang's precise latitude is 2326 22 north of the Equator, commonly known as the Tropic of Cancer or Northern tropic. Local officials say it is the only city that can make such a claim even though the invisible line crosses as many as 15 countries.