Theory # 5 Sky

The Mayans construct in the southwest corner of the palace a tower four stoties high. The tower is particularly important in its relationship to the Temple of Inscriptions where the tomb of Lord Pacal, Palenque's great ruler lies.

At the winter solstice, which happen once a year, the sun sets a direct line from the Palace tower to the center of the Temple of Inscriptions. At this moment of the year, when the sun was directly overhead the Mayans would start their calendar.