APPENDIX X. 
LIST OF THE DAY-SIGNS AND MONTH-SIGNS FOUND IN THE COPAN 
INSCRIPTIONS. 
The following list of the day and month-signs found in the inscriptions of 
Copan is nearly, although not quite, exhaustive. It is believed to be complete for 
all the texts described in Chapters II, III, and IV, with the single exception of the 
Hieroglyphic Stairway of Mound 26, the utterly ruinous condition of which makes 
it impossible to identify and classify all of its day and month-signs. Of this 
important text, the longest in the Corpus Inscriptionum Mayarum, only such day 
and month-signs as occur in the 28 dates described in pages 237-274 are included 
below. Further study of the disconnected fragments would doubtless yield other 
identifiable day and month-signs, but it would in no way alter the great preponder- 
ance of the day-sign Ahau noticeable below, and no attempt has been made to 
include the day and month-signs on these fragments. 
Nor has any attempt been made to include the signs for Ahau and Imix when 
these occur in passages other than where they denote specific days, which is not 
infrequently the case. These two characters doubtless had other meanings. Thus, 
for example, in at least two inscriptions, Stela C (north side) at Quirigua,! and Stela 
1’ at Piedras Negras, the Ahau-sign inverted is used as a sign for the kin or day, the 
lowest unit of the Maya chronological system. Again, in two other inscriptions, 
Stela 1 at Aguas Calientes and Stela 2 at Cancuen, neither of which has been pub- 
lished, Imix is the main part of the sign for the month Mac, as in the Dresden 
Codex.* On Altar S here at Copan it has already been suggested (page 229) that 
a combination of the two signs may indicate the close of one time-period and the 
beginning of the next. Such uses as the foregoing clearly lie without the range of 
day-signs proper, and, as noted above, have not been included in the following list. 
Of the 158 day-signs included in this list, 104, or very nearly 60 per cent., are 
Ahau; this is to be explained by the fact that all units of Maya chronology above 
the kin ended on some day Ahau, and the preponderance of period-endings over all 
other kinds of Maya dates accounts for the great majority of the day-signs recorded 
being Ahau. 
Three day-signs, Imix, Akbal, and Ix, have not been found in the Copan 
inscriptions at all, although they are by no means unknown elsewhere, particularly 
Imix, which is fairly common. 
All of the 19 divisions of the haab are represented in the Copan inscriptions 
except Uayeb, the closing period, and so far as the writer is aware, the sign for this 
month occurs only thrice in the Corpus Inscriptionum Mayarum—twice at Palen- 
que, inthe Temple of the Foliated Cross (see Maudslay, 1889-1902, vol. rv, plate 80, 
ps) and in the Temple of the Inscriptions (zbid., plate 59, 93), and once at Naranjo 
(see Maler, 1908, plate 30, 1, second glyph on the staff, and Morley, 1909, p. 549). 
This period was composed of 5 days, and, as compared with all the other divisions 
of the haab, the 18 months of 20 days each, it was only quarter as long as any one 
of them. Therefore, in the very nature of the case, Uayeb should be found on an 
average, only one-fourth as many times as any other division of the haab. Asa 


1See Maudslay, 1889-1902, vol. 11, plate 19, Glyph e. *See Maler, 1901, plate 12, F3. 
3See Bowditch, 1910, plate 8. 3 
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