Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. social science concepts
5. [social and economic geography concepts]

Additional parents:

1. top of the aat hierarchies
2. Agents Facet
3. Organizations
4. organizations
5. administrative bodies
6. political administrative bodies
7. political administrative bodies by degree of independence
8. divisions

Anotations

Scope note:

Regions within which a common standard time is used; in the modern era, refers to 24 divisions of the earth's surface, with boundaries which are fixed by international agreement and which coincide for the most part with lines of longitude spaced 15 degrees apart.