Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. form attributes
6. size/dimensions
7. [size/dimensions by unit]
8. size/dimension units for duration
9. days (units of time)
10. day signs

Additional parents:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts
4. multidisciplinary concepts
5. dates and dating systems
6. dating systems
7. dating systems by specific type
8. Mesoamerican calendar systems
9. Nahua calendar
10. xiuhpohualli
11. year bearers

Anotations

Scope note:

One of the twenty signs of the Nahua calendar. Combined with a number (from one to thirteen), it indicates the name of a day. Combined with the number one, it indicates the name of a "trecena", the division of thirteen days of the tonalpohualli (Nahua ritual calendar). It is also one of the four signs that are used to designate years ("year bearer").