As the 18 months of 20 days each contained but 360 days, and the common year consists of 365, five supplementary days were added at the end of each year, which made part of no month, and which, for that reason, Neg. Name. Days. they called "days without name," _xona kaba kin_. They called them Year. also _uayab_ or _uayeb Jaab_; which may be interpreted two different ways. The word _uayab_ may be derived from _uay_, which means "bed" or "chamber," presuming that the Indians believed the year to rest during those days; or _uayab_ may equally be derived from another signification of _uay_, viz., to be destroyed, wounded, corroded by the caustic juice of plants, or with ley and other strong liquids. And on this account the Indians feared those days, believing them to be unfortunate, and to carry danger of sudden deaths, plagues, and other misfortunes. For this reason these five days were assigned for the celebration of the feast of the god _Mam_, "grandfather." On the first day they carried him about, and feasted him with great magnificence; on the second they diminished the solemnity; on the third they brought him down from the altar and placed him in the middle of the temple; on the fourth they put him at the threshold or door; and on the fifth, or last day, the ceremony of taking leave (or dismissal) took place, that the new year might commence on the following day, which is the first of the month _Pop_, corresponding with the 16th of July, as appears by the preceding table. The description of the god _Mam_ may be seen in Cogolludo. The division of the year into 18 months of 20 days would have given only the sum of 360 days; and the first day of the year falling on _Kan_, the last would have fallen on _Akbal_, so as to begin again the next year with the same _Kan_, making all the years alike. But as, in order to complete the year, they added five days, the result was that the year which commenced in _Kan_ ended in _Lamat_, the last of the first series of five days; the ensuing year commenced in _Muluc_, the first of the second series of five days; the third commenced in _Gix_, the first of the third series; and the fourth in _Cauac_ (the first ending in _Akbal_), the last of the fourth series of five days; so that the fifth year again began with _Kan_. It has also been stated that the year consisted of 28 weeks of 13 days each, and of one additional day; so that, if the year commenced with the number one of the week, it ended with the same number, and the ensuing year began with number two; and so on through the thirteen numbers of the week, thus forming, with the four initial days, the week of years, or indiction, of which we shall speak hereafter. The following is the order of the twenty days in each of the 18 months composing the years formed by the four initial days together with the intercalary or complementary days.