It was not, however, usual to leave blank spaces when carving the numerals in stone, and the numbers 1, 2, 6, 7, 11, 12, 16, 17 were carved thus:

The sign

is possibly the sign for twenty, but it is very generally used as a sign for a “full count.” (See examples on [page 261].)

2. That the Mayas made use of a year of 360 days divided into 18 months of 20 days each.

3. That the Mayas also made use of a year of 365 days divided into 18 months of 20 days each, with the addition of 5 intercalated days which follow the last regular month of the year.

4. That each of the 18 months and each day of the month was named as shown in the Tables on [page 255].

5. That each of the twenty days of the month was numbered, but that the numbers did not run consecutively from 1 to 20, but from 1 to 13, and then commenced again, so that a calendar for the year of 365 days may be figured thus:—

Names of the months:Pop.Uo.Zip.Zotz.Tzec.Xul.Yaxkin.Mol.Chen.Yax.Zac.Ceh.Mak.Kankin.Muan.Pax.Kayab.Cumhu.Numbers of the days.
Numbers of the months:123456789101112131415161718
Names of the days.
Kan18293104115126137182931
Chicchan293104115126137182931042
Cimi3104115126137182931041153
Manik4115126137182931041151264
Lamat5126137182931041151261375
Muluc613718293104115126137186
Oc71829310411512613718297
Chuen829310411512613718293108
Eb9310411512613718293104119
Ben104115126137182931041151210
Ix115126137182931041151261311
Men12613718293104115126137112
Cib1371829310411512613718213
Caban182931041151261371829314
Ezenab2931041151261371829310415
Cauac31041151261371829310411516
Ahau41151261371829310411512617
Ymix51261371829310411512613718
Ik6137182931041151261371819
Akbal718293104115126137182920
Intercalated days.Kan10
Chicchan11
Cimi12
Manik13
Lamat1