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Mayan Calendar · Day sign 11 of 20

B'atz', the thread of time and the day of renewal

B'atz' is the eleventh day sign of the 260-day count: B'atz' in K'iche', both the howler monkey and the thread, and Chuwen in Yucatec. On 8 B'atz', every 260 days, highland daykeepers renew the count and initiate new daykeepers.

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The Maya day sign B'atz' as the codices write it, drawn after Sylvanus Morley's figure of 1915, beside the words B'atz', Chuwen in Yucatec, Thread, day sign 11 of 20. B'atz' Chuwen in Yucatec · Thread Day sign 11 of 20 With each of the 13 numbers Glyph after Morley, 1915
B'atz' (Chuwen), the eleventh 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 11 of 20; days 11, 31, 51 … 251 of the 260
K'iche' name
B'atz', in the 1987 unified alphabet
Yucatec name
Chuwen; colonial spelling Chuen
Our English gloss
Thread (ours, from the highland reading)
The Yucatec name means
howler monkey
Classic reading of the glyph
Not known
Year bearer
Never, in any known set
First day in the count
11 B'atz', day 11 of the 260
Glyph
Our tracing of Morley 1915, figure 17; not yet in Unicode

Meaning

In Yucatec chuwen is the craftsman, and Thompson gave the day to Ah Chuen, the monkey patron of the arts, with the howler monkey as its highland association. The Classic reading is unknown.

The K'iche' name B'atz' is both the howler monkey and the thread, and the daykeepers build on the thread. The Komon Tohil daykeepers explain it as the thread of time and of human destiny; the Maya' Wuj manual as the beginning and end of the thread of life and a day for art. In Momostenango the plays on the name, spinning and winding, make it the day for winding up and completing things.

Our reading: time, weaving and the arts, and the joining of people and things. People born on B'atz' are described as creative and sociable. The sentences are ours.

In the highlands today

8 B'atz', Waqxaqib' B'atz', is the most important day of the count. Daykeepers from across the highlands gather, at Momostenango above all, to renew the count; new daykeepers are presented at the shrines, and all who were initiated return to renew their vows. Guatemala's Ministry of Culture gave 18 January 2025, 5 October 2025 and 22 June 2026 as the days.

In the Popol Vuh One Monkey and One Artisan, the Hero Twins' half-brothers, are turned into monkeys and become the patrons of the arts: the story behind the day's monkey and its craft.

The glyph and the old readings

Thompson's Yucatec augury for the day is the craftsman, his highland one the howler monkey. B'atz' is never a year bearer.

The Central Mexican day of the same position is Ozomahtli, the monkey: the two counts share the animal.

In the count

B'atz' comes round every twentieth day, thirteen times in the 260: on days 11, 31, 51, 71, 91, 111, 131, 151, 171, 191, 211, 231 and 251, with the numbers 11, 5, 12, 6, 13, 7, 1, 8, 2, 9, 3, 10 and 4 in that order, so 11 B'atz' is its first day in the count and 4 B'atz' its last. In the nawal cross of a person born on B'atz', the day eight before (conception) falls on Aq'ab'al, the day eight after (destiny) on Kawoq, six before (the right hand) on Kan and six after (the left hand) on No'j, 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
Ah Chuen sourced
Old augury, Yucatan and the highlands, after Thompson
craftsman (Yucatan); howler monkey (highlands); gradings differ between communities disputed
The name, as the Zunil daykeepers explain it
thread; the thread of time and of human destiny sourced
Direction and colour
west, black (ek'): read off the four-direction cycle; not attested for this day itself, and not shown on our chart unverified
Our reading
Time, weaving and the arts: creative and sociable, good at joining people and things together. 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 Ah Chuen.
Komon Tohil daykeepers, Zunil
Thread; the thread of time and of human destiny.
The Maya' Wuj manual
Monkey; the beginning and the end of the thread of life; a day for art and creation.
Momostenango (Andrés Xiloj, 2005)
Winding up one's life and the life of one's descendants, a play on winding thread.
The Central Mexican count (tonalpohualli)
Ozomahtli, monkey: the day of the same position in a related but different count.
Dreamspell (1990)
"Blue Monkey" for the same position in its own count; not our name for the sign.
EsoTerrier
Time, weaving and the arts: creative and sociable, good at joining people and things together. Our words.

Claims about it

  • B'atz' is the "Blue Monkey".

    false

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

  • The count was lost and later restored.

    false

    What the record shows: The renewal on 8 B'atz' has been kept by highland daykeepers through the colonial period to the present; the ministry announces its dates.

  • Each day is fixed as good or bad.

    disputed

    What the record shows: The old gradings differ between communities; the daykeepers' great day of renewal is 8 B'atz', a pairing of number and sign, not the sign alone.

Elsewhere on EsoTerrier

Sources

Primary texts (7)
  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. Allen J. Christenson (tr.), Popol Vuh: Sacred Book of the Quiché Maya People (translation and commentary). O Books; Mesoweb, 2003. Facts only. mesoweb.com/publications/Christenson/PopolVuh.pdf
  5. 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
  6. 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
  7. 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 (11)
  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. "Popol Vuh", Wikipedia (orientation only). en.wikipedia.org/wiki/Popol_Vuh
  5. Ministerio de Cultura y Deportes de Guatemala, Waqxaqib' B'atz' news pages, Ministerio de Cultura y Deportes de Guatemala (18 January 2025, 5 October 2025, 22 June 2026). noticias.mcd.gob.gt, 2026. Facts only. noticias.mcd.gob.gt/2025/01/18/la-importancia-waqxaqib-batz
  6. 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
  7. 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
  8. 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
  9. "Tonalpohualli", Wikipedia (orientation only). en.wikipedia.org/wiki/T%C5%8Dnalp%C5%8Dhualli
  10. 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
  11. Barbara Tedlock and Dennis Tedlock; Night Fire Films, Breaking the Maya Code: interview with Barbara and Dennis Tedlock (11 to 12 February 2005, Momostenango), transcript. Night Fire Films, 2005. Facts only. nightfirefilms.org/breakingthemayacode/interviews/TedlocksTRANSCRIPT.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.

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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.