Skip to content

Mayan Calendar · Day sign 13 of 20

Aj, the cane and the growing maize

Aj is the thirteenth day sign of the 260-day count: Aj in K'iche', the cane, and B'en in Yucatec. The highland tradition reads it through the maize plant that grows straight in the field, a sign of the household and of steady growth.

Is this your day sign?

Enter your birth date to see your free Mayan day sign. No email needed.

Not saved, and never put in a web address. Privacy policy

The Maya day sign Aj as the codices write it, drawn after Sylvanus Morley's figure of 1915, beside the words Aj, B'en in Yucatec, Cane, day sign 13 of 20. Aj B'en in Yucatec · Cane Day sign 13 of 20 With each of the 13 numbers Glyph after Morley, 1915
Aj (B'en), the thirteenth day sign: our tracing of the codex form in Morley's Introduction to the Study of the Maya Hieroglyphs (1915, figure 17), which is in the public domain. The day signs are not yet in Unicode.

Facts

Position
Day sign 13 of 20; days 13, 33, 53 … 253 of the 260
K'iche' name
Aj, in the 1987 unified alphabet
Yucatec name
B'en; colonial spelling Ben
Our English gloss
Cane (ours, from the highland reading)
The Yucatec name means
green maize, seed
Classic reading of the glyph
Not known
Year bearer
Not in the highlands; in Late Classic Campeche
First day in the count
13 Aj, day 13 of the 260
Glyph
Our tracing of Morley 1915, figure 17; not yet in Unicode

Meaning

Thompson was unsure of the glyph and of the Yucatec name B'en, but gave the day to maize, with food as its Yucatec augury and green maize as its highland one. Scholars gloss it as green maize or seed; the Classic reading is unknown.

The K'iche' name Aj is the cane, and the highland tradition reads the day through the maize plant. The Komon Tohil daykeepers derive it from the cane field and the milpa and call it a rod of virtues and a day of triumph; the Maya' Wuj manual makes it abundance and the constant sprouting of life.

Our reading: the household, steady growth and upright authority, carried by people described as calm and capable. The words are ours.

In the highlands today

Maya' Wuj makes Aj a day to give thanks for the protection of the home, its animals and its plants. Andrés Xiloj saw in it the maize stalks bent over before the harvest, as people kneel before the Earth, God and the ancestors.

Aj closes the first thirteen-day run of the count: 13 Aj is day 13 of the 260, and the next day, 1 I'x, opens the second.

The glyph and the old readings

B'en was one of the four year bearers of Late Classic Campeche; it bears no year in the highlands.

The Central Mexican day of the same position is Acatl, the reed, close to the cane of the K'iche' name but from a different count.

In the count

Aj comes round every twentieth day, thirteen times in the 260: on days 13, 33, 53, 73, 93, 113, 133, 153, 173, 193, 213, 233 and 253, with the numbers 13, 7, 1, 8, 2, 9, 3, 10, 4, 11, 5, 12 and 6 in that order, so 13 Aj is its first day in the count and 6 Aj its last. In the nawal cross of a person born on Aj, the day eight before (conception) falls on Kan, the day eight after (destiny) on Imox, six before (the right hand) on Kej and six after (the left hand) on Kawoq, each with its own number.

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.

Thompson's reading of the glyph (1950)
uncertain sourced
Presiding god of the day, after Thompson
maize sourced
Old augury, Yucatan and the highlands, after Thompson
food (Yucatan); green maize (highlands); gradings differ between communities disputed
The name, as the Zunil daykeepers explain it
cane field and milpa; maize; a rod of virtues sourced
Direction and colour
east, red (chak): read off the four-direction cycle; not attested for this day itself, and not shown on our chart unverified
Our reading
The household, steady growth and upright authority: calm and capable. our construction

How the schools read it

Classic inscriptions (epigraphers)
Reading of the glyph not known
J. Eric S. Thompson, 1950
The glyph as uncertain; the day's god maize.
Komon Tohil daykeepers, Zunil
Cane field and milpa; maize; a rod of virtues.
The Maya' Wuj manual
Cane, abundance; the constant sprouting of existence; the triumph of good over evil; a day to give thanks for the protection of the home, animals and plants.
Momostenango (Andrés Xiloj, 2005)
The maize stalks bent over at harvest, as we kneel before the Earth, God and the ancestors.
The Central Mexican count (tonalpohualli)
Acatl, reed: the day of the same position in a related but different count.
Dreamspell (1990)
"Red Skywalker" for the same position in its own count; not our name for the sign.
EsoTerrier
The household, steady growth and upright authority: calm and capable. Our words.

Claims about it

  • Aj is the "Red Skywalker".

    false

    What the record shows: That is a Dreamspell name from a modern count of 1990, not the Maya day.

  • Aj has a traditional colour, gemstone and list of jobs.

    unverified

    What the record shows: No Maya source gives these; Western sites added them.

  • The Aztec reed is the meaning of Aj.

    false

    What the record shows: The Central Mexican count is related but different; the K'iche' name is the cane of the maize field.

Elsewhere on EsoTerrier

Sources

Primary texts (6)
  1. Komon Tohil (K'iche' daykeepers, Zunil); Smithsonian NMAI, The Meaning of the Days in the Maya Sacred Calendar. maya.nmai.si.edu, 2012. Consulted for facts; never copied. maya.nmai.si.edu/sites/default/files/resources/The%20Meaning%20of%20the%20Days%20in%20the%20Maya%20Sacred%20Calendar.pdf
  2. Editorial Maya' Wuj, Usolik rokisaxik ri Cholq'ij, ri Ab' / Manual de los calendarios mayas Cholq'ij y Ab' (manual for the 2025 to 2026 wall calendar). Editorial Maya' Wuj, Guatemala, 2025. Consulted for facts; never copied. mayawuj.com.gt/wp-content/uploads/2025/04/Instructivo-rueda-calendarica-de-pared-2025-2026.pdf
  3. 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
  4. Sylvanus Griswold Morley, An Introduction to the Study of the Maya Hieroglyphs. Bureau of American Ethnology, Washington, 1915. Public domain (a US government publication); our day-sign glyphs are traced from its figure 17. gutenberg.org/files/43491/43491-h/43491-h.htm
  5. 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
  6. Andres Xiloj; translation and notes by Allen J. Christenson; Night Fire Films, Breaking the Maya Code: interview with Andres Xiloj, K'iche' daykeeper of Momostenango (12 February 2005), transcript. Night Fire Films, 2005. Facts only; paraphrased, not quoted. nightfirefilms.org/breakingthemayacode/interviews/XilojTRANSCRIPT.pdf
Studies and other sources (8)
  1. "Maya calendar", Wikipedia (orientation only). en.wikipedia.org/wiki/Maya_calendar
  2. "Tzolk'in", Wikipedia (orientation only). en.wikipedia.org/wiki/Tzolk%CA%BCin
  3. "Dreamspell", Wikipedia (orientation only). en.wikipedia.org/wiki/Dreamspell
  4. Academia de Lenguas Mayas de Guatemala, Academia de Lenguas Mayas de Guatemala: history, and Government Accord 1046-87 (unified alphabets). almg.org.gt, 2026. Facts only. almg.org.gt/historia
  5. Script Encoding Initiative, UC Berkeley, Script Encoding Initiative: 'From Stone to Screen' (30 December 2025) and 'SEI in 2026' (24 February 2026). sei.berkeley.edu, 2026. Facts only. sei.berkeley.edu/2025/12/30/from-stone-to-screen
  6. 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
  7. "Tonalpohualli", Wikipedia (orientation only). en.wikipedia.org/wiki/T%C5%8Dnalp%C5%8Dhualli
  8. Nicholas A. Hopkins and J. Kathryn Josserand, Directions and Partitions in Maya World View. FAMSI (Foundation for the Advancement of Mesoamerican Studies), 2011. Facts only. famsi.org/research/hopkins/DirectionalPartitions.pdf
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.

Your Mayan Calendar reading, $4.99. Includes this system's raw data. Written for you by AI. Read a sample. Charts and the written text are free in every account.

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.