ing on the 12th of May.
17th, Kayab, beginning on the 1st of June.
18th, Cumku, beginning on the 21st of June.

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