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Exsignum

Image credits

Exsignum uses historical public-domain images. Here is where each one comes from, its license and what we did with it.

Glyphs of the 20 day signs

The glyphs you see in the Mayan calculator, on each day-sign page and in Mayan compatibility are the Tzolk’in day signs in their codex form.

Source
Plate “Maya day signs” by Thomas Athol Joyce, Mexican Archaeology (London, 1914), digitized by the Internet Archive and published on Wikimedia Commons.
License
Public domain. The work was published in 1914 and its author died in 1942: it is no longer under copyright. Wikimedia Commons marks it as public domain.
What we did
We cropped the 20 codex forms from the plate (rows A to V) and traced them to single-color SVG, without redrawing them or adding anything.

The 20 glyphs, in Tzolk’in order

  1. imix
  2. ik
  3. akbal
  4. kan
  5. chicchan
  6. cimi
  7. manik
  8. lamat
  9. muluc
  10. oc
  11. chuen
  12. eb
  13. ben
  14. ix
  15. men
  16. cib
  17. caban
  18. etznab
  19. cauac
  20. ahau

Page 43b of the Dresden Codex

The image in the “How we calculate it” section of the home page: Maya bar-and-dot numerals next to day signs.

Source
Dresden Codex (pre-Conquest Maya manuscript), Saxon State and University Library Dresden (SLUB). Detail of page 43b published on Wikimedia Commons.
License
Public domain. The work is more than 500 years old; Wikimedia Commons marks it as public domain.
What we did
We resized it and converted it to WebP. We did not crop or retouch it.

Images of the five traditions

The images in the traditions section of the home page. We cropped them to a square and resized them, with no other changes.