THK M UAN < 1\ I I.IZATION 101 



Since there are twenty days or positions in the month 

 and likewise twenty distinct day names in the tzolhin, 

 falling in regular order, it follows that each day would 

 always occupy the same month position were it not for 

 the offset at the end of each year caused by the short 

 [Jayeb period. As it is. any day name occupies the 

 same month position during the course of an entire 

 year and a position five days in advance during the 

 course of the following year. Since five is contained f on r 

 times in twenty there can be only four shifts, the fifth 

 year showing the same arrangement as the first. The 

 following table gives the month positions of each day 

 name during the changes of four consecutive year 

 these are recorded in the ancient inscriptions. 



Ik. Manik, Eb, Cuban 0, 5, 10, 15 



Akbal, Lamat, Ben, Eznab 1, 6, 11, 16 



Kan, Muluc, Ix, Cauac 2, 7, 12, 17 



( Jhicchan, ( )<•. Men, Ahau 3, 8, 13, 18 



Imix, ( imi, Chuen, Cib 4, 9, 14, 19 



Thus Ik occupies position the first year, 5, the second 

 year, 10 the third, 15 the fourth, and the fifth. While 

 Manik that belongs to the same set has position 5 the 

 firsl year, 10 the second, etc. It will be noted that Imix. 

 the first day of the formal permutation of the tzolkin is 

 never the first day of a month. 



The Calendar Round. But this assignment of 

 particular day names to particular places in the month 

 does n<>t close the problem. Each day name is asso- 

 ciated in the tzolhin, or permutation, with a day number. 

 While it i- true that each day can occupy only four 

 month positions in a- many years, it must be remem- 

 bered that the day number- ;t-sociated with these 

 name- can run the whole gamut of 13 changes. Thus. 

 although Ik must always occupy the fifth position in the 

 month- during a certain year, nevertheless it will have 



