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Mayan Calendar · Number 13 of 13

Thirteen, the strongest number and the end of the run

Number 13 is the last of the thirteen numbers of the 260-day count, written as two bars and three dots. In the highland reports it is the strongest; it closes every run of thirteen days, and 13 Iq' bore the highland year that opened in February 2025.

The Maya number 13 drawn as two bars and three dots, beside the words Number 13, two bars and three dots, strong in our three bands, and its Unicode code point U+1D2ED. Number 13 2 bars and 3 dots With each of the 20 day signs Strong in our three bands U+1D2ED
The number 13 as the Maya scribes wrote it, two bars and three dots, drawn by us; a bar is five and a dot is one.

Facts

Written
Two bars and three dots
Unicode
U+1D2ED, MAYAN NUMERAL THIRTEEN (Unicode 11.0, 2018)
Strength in our three bands
strong (1 to 3 mild, 4 to 9 middle, 10 to 13 strong; our grouping)
First day in the count
13 Aj, day 13 of the 260
Days with this number
Twenty in every 260: days 13, 26, 39 … 260
Head variant (Classic, after Thompson)
a reptilian earth monster with a water-lily flower
Highland year bearers with this number, 2018 to 2038
13 Iq' from 18 February 2025; 13 Kej from 15 February 2038

Meaning

Thirteen closes each run: after 13 the count returns to 1 with the next sign. It is the strongest of the numbers in the highland reports, and Thompson found thirteen counted very good at Santa Eulalia, a town's grading we do not repeat as a fortune.

Our sentence: thirteen is the strongest number and the end of the run, completion before a new beginning; the keyword is "completion, greatest force". Both are ours. The Classic and Postclassic Maya counted thirteen layers of the sky.

Days and ceremonies

13 Iq' bore the highland year that opened on 18 February 2025. Its first day in the count is 13 Aj, day 13 of the 260, the last day of the first run.

Thirteen is also the number of b'ak'tuns in the Long Count's era as the 2012 ending was reckoned; that ending was the start of the fourteenth, not the end of the count.

The numeral

Two bars and three dots. Thompson identified the Classic head for 13 as a reptilian earth monster with a water-lily flower, matched with the day Muluk.

Thirteen is the highest number the day count uses; in the Long Count the scribes wrote larger numbers by place, in twenties.

In the count

The number 13 falls on twenty days of the 260: days 13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156, 169, 182, 195, 208, 221, 234, 247 and 260, with the signs Aj, Kame, Kawoq, E, Kan, Tijax, B'atz', K'at, No'j, Tz'i', Aq'ab'al, Ajmaq, Toj, Iq', Tz'ikin, Q'anil, Imox, I'x, Kej and Ajpu in that order. A sign comes back every twenty days and a number every thirteen, so the same pairing, such as 13 Aj, returns only after 260 days. Each year the highland year bearer's number rises by one, because 365 days are 28 runs of thirteen and one day more.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

Strength, in the highland reports
The number gives the day its force: low numbers gentle, high numbers strong (Tedlock at Momostenango and Bunzel at Chichicastenango, as reported) sourced
Our band
strong; the bands and their edges are EsoTerrier's grouping, not a published scheme our construction
Our keyword and sentence
"completion, greatest force"; Thirteen is the strongest number and the end of the run, completion before a new beginning; thirteen is also the number of the layers of the sky in Maya cosmology. our construction
Head variant of the numeral, after Thompson
a reptilian earth monster with a water-lily flower, the god he gave to the day Muluk sourced
A fixed character for the number
None established; which numbers are good differs from town to town disputed

How the schools read it

Highland ethnography, as reported
The number is the strength of the day, gentle in the low numbers and strong in the high.
Thompson's survey of highland towns
Which numbers count as good or bad differs from town to town.
Classic scribes
Wrote 13 as two bars and three dots, or as a god's head: a reptilian earth monster with a water-lily flower, in Thompson's identification.
Dreamspell (1990)
Gives each number a name of its own in a different modern count; not used here.
EsoTerrier
Strong in our bands; keyword "completion, greatest force". Our words, a reading aid.

Claims about it

  • The number 13 has a fixed traditional character.

    unverified

    What the record shows: The highland reports give the numbers strength, low gentle and high strong; fixed characters per number are modern, and our own keyword is labelled as ours.

  • Thirteen is one of thirteen cosmic "tones" with a Maya name.

    false

    What the record shows: The tone names are Dreamspell's, from 1990. The Maya count has numbers 1 to 13.

  • The Maya calendar ended on 21 December 2012.

    false

    What the record shows: On 4 Ajaw 3 K'ank'in the Long Count completed its thirteenth b'ak'tun and the fourteenth began.

Elsewhere on EsoTerrier

Sources

Primary texts (3)
  1. Mayatecum, ¿Cuál es el verdadero día del año nuevo maya solar?. mayatecum.com, 2024. Facts only. mayatecum.com/cual-es-el-verdadero-dia-del-anyo-nuevo-maya-solar
  2. Atitlan Vida, The 13 numbers of the Tzolk'in. atitlanvida.com, 2025. Facts only. atitlanvida.com/culture/tzolkin/the-13-numbers
  3. J. Eric S. Thompson, Maya Hieroglyphic Writing: Introduction. Carnegie Institution of Washington, Publication 589, 1950 (reprinted 1960 and 1971). Facts and short attributed phrases only. mesoweb.com/publications/Thompson/Thompson1950.html
Studies and other sources (10)
  1. "Mesoamerican Long Count calendar", Wikipedia (orientation only). en.wikipedia.org/wiki/Mesoamerican_Long_Count_calendar
  2. "Maya calendar", Wikipedia (orientation only). en.wikipedia.org/wiki/Maya_calendar
  3. "2012 phenomenon", Wikipedia (orientation only). en.wikipedia.org/wiki/2012_phenomenon
  4. "Dreamspell", Wikipedia (orientation only). en.wikipedia.org/wiki/Dreamspell
  5. "Maya religion", Wikipedia (orientation only). en.wikipedia.org/wiki/Maya_religion
  6. Barbara Tedlock, Time and the Highland Maya. University of New Mexico Press, 1982. Not read by us: no lawful copy was reachable. Known through Barbara and Dennis Tedlock's 2005 interview (S99) and the works that cite it; facts only. search.worldcat.org/title/8033915
  7. Agencia Guatemalteca de Noticias, Pueblos celebran la llegada del Año Nuevo maya (18 February 2025). agn.gt, 2025. Facts only. agn.gt/pueblos-celebran-la-llegada-del-ano-nuevo-maya
  8. Unicode Consortium; Google Noto, Mayan Numerals (Unicode block U+1D2E0 to U+1D2FF) and Noto Sans Mayan Numerals. unicode.org; github.com/notofonts, 2018. github.com/notofonts/mayan-numerals
  9. Harri Kettunen and Christophe Helmke, Introduction to Maya Hieroglyphs, 20th edition. Wayeb (European Association of Mayanists), 2025. Facts only. wayeb.org/wp-content/uploads/2025/11/Kettunen_Helmke_2025_WH_English_20th_ed.pdf
  10. Ruth Leah Bunzel, Chichicastenango: A Guatemalan Village. J. J. Augustin, Locust Valley NY (Publications of the American Ethnological Society 22), 1952. Public domain; its passage on the numbers is known to us second hand. catalog.hathitrust.org/Record/004939427
Our own research (2)
  1. EsoTerrier Mayan calendar research, 2026-10-11 (main report, validation report, visual survey, notes) (2026).
  2. EsoTerrier engine, Mayan reference and calculation (2026). Its texts are our own, written from the sources above.

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By EsoTerrier. Written with AI assistance from our research and checked against its sources; last revised 20 October 2026. How we write these pages.

First published ; last revised . Corrections: support@esoterrier.com.