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Mayan Calendar · Day sign 1 of 20

Imox, the water that opens the count

Imox is the first of the twenty day signs of the 260-day count: Imox in K'iche', Imix in Yucatec, read by today's highland daykeepers as the sea, the rivers and the lakes. In the old Yucatec sources it was the earth monster floating on the first waters, and 1 Imox is the first day of the 260.

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The Maya day sign Imox as the codices write it, drawn after Sylvanus Morley's figure of 1915, beside the words Imox, Imix in Yucatec, Water, day sign 1 of 20. Imox Imix in Yucatec · Water Day sign 1 of 20 With each of the 13 numbers Glyph after Morley, 1915
Imox (Imix), the first 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 1 of 20; days 1, 21, 41 … 241 of the 260
K'iche' name
Imox, in the 1987 unified alphabet
Yucatec name
Imix, spelt the same in the colonial sources
Our English gloss
Water (ours, from the highland reading)
The Yucatec name means
water, water serpent (essence)
Classic reading of the glyph
Ha'? or Baah? (a question mark: not secure)
Year bearer
Never, in any known set
First day in the count
1 Imox, day 1 of the 260
Glyph
Our tracing of Morley 1915, figure 17; not yet in Unicode

Meaning

Imox stands first in the count, and 1 Imox is day 1 of the 260. Scholars gloss the Yucatec name Imix as water or the water serpent; J. Eric S. Thompson read the glyph as the flower of the water lily and gave the day to the earth crocodile that floats on the primordial water.

The highland reading keeps the water and turns it inward. The Komon Tohil daykeepers of Zunil derive the name from the sea, the rivers and the lakes; the Maya' Wuj manual adds the lizard and the subtle, intuitive and creative side of a person.

Our reading, written for EsoTerrier from these sources: a day of water in all its forms and of the deep, imaginative side of the mind, whose task is to keep that depth from turning into confusion. People born on Imox are described as imaginative and sensitive to what others overlook. The sentences are ours, not a daykeeper's.

In the highlands today

The Zunil daykeepers use Imox to ask for rain, for the return of someone who has left home, and for calm in a troubled mind or household; the Maya' Wuj manual makes it a day for the purity of rivers, lakes and seas.

In Momostenango the day's reminder, as the daykeeper Andrés Xiloj gave it in 2005, is to keep a clear head and not act foolishly in one's work. The Momostenango reminders are plays on the sound of the day's name, and they differ from community to community.

The glyph and the old readings

The Classic reading of the glyph is uncertain: the epigraphers' handbook gives Ha'? or Baah?, with the question mark that means the reading is not secure. Thompson's colonial sources give maize and fruitfulness as the day's augury in Yucatan and the earth as its highland association; such gradings differ from place to place, so we read none of them as a fortune.

In the Central Mexican count the day of the same position is Cipactli, the caiman or water monster: a related image from a different calendar, not the meaning of the Maya day.

In the count

Imox comes round every twentieth day, thirteen times in the 260: on days 1, 21, 41, 61, 81, 101, 121, 141, 161, 181, 201, 221 and 241, with the numbers 1, 8, 2, 9, 3, 10, 4, 11, 5, 12, 6, 13 and 7 in that order, so 1 Imox is its first day in the count and 7 Imox its last. In the nawal cross of a person born on Imox, the day eight before (conception) falls on Aj, the day eight after (destiny) on Toj, six before (the right hand) on Tz'ikin and six after (the left hand) on Kej, 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)
flower of the water lily sourced
Presiding god of the day, after Thompson
the earth crocodile sourced
Old augury, Yucatan and the highlands, after Thompson
earth (highlands); maize and fruitfulness (Yucatan); gradings differ between communities disputed
The name, as the Zunil daykeepers explain it
sea, river and lake 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
Water in all its forms and the deep, imaginative side of the mind: sensitive, intuitive, at risk of confusion when that depth is not kept clear. our construction

How the schools read it

Classic inscriptions (epigraphers)
Reading of the glyph: Ha'? or Baah?
J. Eric S. Thompson, 1950
The glyph as flower of the water lily; the day's god the earth crocodile.
Komon Tohil daykeepers, Zunil
Sea, river and lake.
The Maya' Wuj manual
Lizard; intelligence; the subtle, intuitive and creative side of a person; a day for the purity of rivers, lakes and seas.
Momostenango (Andrés Xiloj, 2005)
A day to keep one's mind clear and not act foolishly in one's work.
The Central Mexican count (tonalpohualli)
Cipactli, caiman, aquatic monster: the day of the same position in a related but different count.
Dreamspell (1990)
"Red Dragon" for the same position in its own count; not our name for the sign.
EsoTerrier
Water in all its forms and the deep, imaginative side of the mind: sensitive, intuitive, at risk of confusion when that depth is not kept clear. Our words.

Claims about it

  • The Aztec day image of the same position, the caiman, is the meaning of Imox.

    false

    What the record shows: The Central Mexican count is related but different. The highland daykeepers read Imox as water, the sea and the rivers.

  • Imox is the "Red Dragon".

    false

    What the record shows: That is the Dreamspell name for the first position in its own count of 1990. For most birth dates the Dreamspell sign is not the traditional one.

  • Imox is a bad day, the day of the mad.

    disputed

    What the record shows: A grading from some old highland lists. Thompson's tables show the gradings differing between communities, and the daykeepers today use Imox for rain and calm.

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 (9)
  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
  9. 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.