Drawing adopted from Robert Sharer, The Ancient Maya, p. 182

"The ancient Mayas were aware of the annual transit of the sun along the horizon and used it ritually, even though there was not a method for recording it in the complex Maya calendar. Modern Maya groups are still acutely aware of the solar cycle as defined by the passage of the sun from north to south on the horizon...

Mounting evidence from epigraphers, ethnographers, and astronomers indicates that the Maya conceived of the directions not as east, west, north and south, but as the four solstitial sunrise and sunset points, plus zenith and nadir."

Carolyn E. Tate, Yaxchilan: The Design of a Maya Ceremonial City, p 112