The so called “Castle” of Chichén Itzá will be divided in two on June 21, on a dark and a lighted halves, not by an act of magic, but by the sun on the longest day of the year, the summer solstice.

The discoverer of this phenomenon, Eddie Salazar Gamboa, investigator from the Technology Institute of Mérida, said that the character of this architectural wonder has been confirmed with pictures taken by NASA from space.

According to Salazar Gamboa, Earth will have its most extreme inclination in regards to the sun at 5:51 am, of 23 degrees, and the phenomenon will last for 30 minutes.

On that date, “the sun seems to stop when it reaches its furthest displacement over the horizon.”

Sunlight will last for 13 hours with 25 minutes, with the sun rising at 6:18 am and setting at 7:43 pm.

The same phenomenon, but reversed, happens on the winter solstice, the shortest day of the year, and that means that the builders of the “Castle” were using them as indicators of the change of seasons.