Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. multidisciplinary concepts
5. [dates and dating systems]
6. dating systems
7. [dating systems by specific type]

Anotations

Scope note:

Dating system based on a cycle of 60 Tibetan years, each of which usually has 354 days (12 cycles of the phases of the Moon). Adjustment to the solar year of about 365 days is made by intercalation of an extra month every three years. It is based on the Chinese calendar.