The Mayan Time Counts.
The passage of time, seen in finer and finer degree in the course of human life, the succession of summer and winter, the waxing and waning moons, the alternation of day and night, the upward and downward sloping of the sun, and the swinging dial of the stars, are phenomena that no human group has failed to notice. Longer periods than those included within the memory of the oldest men (presenting an imperfect reflection of the memory of men still older) are found only in those favored centers where a serviceable system of counting has been developed. Mythology has a content of history but hardly of chronology. Tradition, when organized by the priesthood, may be reasonably dependable for perhaps two hundred years.
The year and the month are the basis of all primitive time systems, the former depending on the recurring seasons, the latter on recurring moons. Both of these are expressed in days. Unfortunately, the day is not contained evenly in either the month or the year, nor do these larger time measures show any simple relation to each other as regards length. The history of the calendar is one of compromise and correction.
The Mayan calendars were made possible by: first, the knowledge of astronomical time periods; second, the possession of a suitable notation system; third, the discovery of a permutation system of names and numbers.