Editing Aztec calendar (section)

==={{lang|es|Trecenas}}===
The 260 days of the sacred calendar were grouped into twenty periods of 13 days each. Scholars usually refer to these thirteen-day "weeks" as {{lang|es|[[trecena]]s}}, using a [[Spanish language|Spanish]] term derived from {{wikt-lang|es|trece}} "thirteen" (just as the Spanish term {{wikt-lang|es|docena}} "dozen" is derived from {{wikt-lang|es|doce}} "twelve"). The original [[Classical Nahuatl|Nahuatl]] term was "in cencalli tonalli" (a family of days), according to Book IV of the ''Florentine Codex''.

Each {{lang|es|trecena}} is named according to the calendar date of the first day of the 13 days in that {{lang|es|trecena}}. In addition, each of the twenty {{lang|es|trecenas}} in the 260-day cycle had its own tutelary deity:

{| class="wikitable"
! {{lang|es|Trecena}} || Deity || {{lang|es|Trecena}} || Deity
|-
| 1 Crocodile || {{lang|nci|[[Tonacatecuhtli]]|italic=no}} || 1 Monkey || {{lang|nci|[[Patecatl]]|italic=no}}
|-
| 1 Jaguar || {{lang|nci|[[Quetzalcoatl]]|italic=no}} || 1 Lizard || {{lang|nci|[[Itztlacoliuhqui]]|italic=no}}
|-
| 1 Deer || {{lang|nci|[[Tepēyōllōtl]]|italic=no}} || 1 Quake || {{lang|nci|[[Tlazōlteōtl]]|italic=no}}
|-
| 1 Flower || {{lang|nci|[[Huēhuecoyōtl]]|italic=no}} || 1 Dog || {{lang|nci|[[Xipe Totec|Xīpe Totēc]]|italic=no}}
|-
| 1 Reed || {{lang|nci|[[Chalchiuhtlicue]]|italic=no}} || 1 House || {{lang|nci|[[Ītzpāpālōtl]]|italic=no}}
|-
| 1 Death || {{lang|nci|[[Tōnatiuh]]|italic=no}} || 1 Vulture || {{lang|nci|[[Xolotl]]|italic=no}}
|-
| 1 Rain || {{lang|nci|[[Tlāloc]]|italic=no}} || 1 Water || {{lang|nci|[[Chalchiuhtotolin]]|italic=no}}
|-
| 1 Grass || {{lang|nci|[[Mayahuel]]|italic=no}} || 1 Wind || {{lang|nci|[[Chantico]]|italic=no}}
|-
| 1 Snake || {{lang|nci|[[Xiuhtecuhtli]]|italic=no}} || 1 Eagle || {{lang|nci|[[Xōchiquetzal]]|italic=no}}
|-
| 1 Flint || {{lang|nci|[[Mictlāntēcutli]]|italic=no}} || 1 Rabbit || {{lang|nci|[[Xiuhtecuhtli]]|italic=no}}
|}