The numbers run from 1 up to 13. The 20 names and glyphs of the days are:
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| 1. Imix |
2. Ik |
3. Akbal |
4. Kan |
5. Chikchan |
6. Kimi |
7. Manik |
8. Lamat |
9. Muluk |
10. Ok |
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| 11. Chuwen |
12. Eb |
13. Ben |
14. Ix |
15. Men |
16. Kib |
17. Kaban |
18. Etznab |
19. Kawak |
10. Ajaw |
For any fixed day name there are 40 days between subsequent numbers, eg.:
4 Akbal = 3 Akbal + 40 days
5 Akbal = 3 Akbal + 80 days
5 Akbal = 3 Akbal + 80 days
