Jose Arguelles has pointed out that the Tzolkin is a harmonic of the Great Cycle, and can be used to map history, as if it is measuring not individual gestation but species gestation, since 5 Great Cycles add to exactly 26,000 Tuns; the "Grand Year" or precession of the equinoxes - a higher harmonic

By John Major Jenkins, Originally published in the Dec-Jan '95 issue of Mountain Astrologer.

The first question that came up for me was as follows. Since Lord (Ahau) Pacal is, by way of divine kingship, equated with the sun, and he is portrayed "entering" the Sacred Tree on his famous sarcophagus lid, on what day does the sun come around to conjunct the crossing point of ecliptic and Milky Way? This would be an important date. In the pre-dawn skies of this date, the Milky Way would be seen to arch overhead from the region of Polaris (Heart of Sky) and would point right at where the sun rises. This (and the corollary date 6 months later) is the only date when the Sun/Lord could jump from the ecliptic track and travel the Milky Way up and around the vault of heaven to the region of Polaris, there to enter the "Heart of Sky." ...