The calendars in use were of two different kinds, the one called ꜭhol ꜫih, literally "the valuer or appraiser of days," which was employed exclusively for astrological and divining purposes, to decide on which were lucky and unlucky days; and may ꜫih, "the revolution or recurrence of days," which was for chronological purposes.[1]
It will be noticed that in Xahila's Annals, every year ends on a day Ah, and that each such closing day is numerically three less than the day Ah terminating the preceding year. There are also obvious inconsistencies in his identification of native dates with the Christian calendar; but these, and the numerous difficult questions they suggest, would take me too far afield to enter upon in the present introductory paragraphs. The object of this volume is rather to furnish material for study than to undertake the study itself.
The brief description of their reckoning of time, given by Sanchez y Leon, may be quoted: "They divided the year into 18 months, and each month into 20 days; but they counted only by nights, which they mentioned as dawns (alboradas); the movements of the sun in the ecliptic governed their calendar; they began their year forty days before ours; they celebrated annually three great feasts, like Easters, at which periods both sexes assembled together at night, and indulged in drunkenness and wantonness."[2]
I think in this extract the author should have said that they began their year 40 days later than ours, as this would bring his statement more into conformity with other writers.
