Feng Pan and Jerry R. Hobbs

USC Information Sciences Institute

The time zone resource in OWL includes three parts: the time zone ontology/schema file, the US time zone instance file, and the world time zone instance file.

The time zone ontology links a preliminary geographic ontology with a time ontology. It defines the vocabulary about regions, political regions (countries, states, counties, reservations, and cities), time zones, daylight saving policies, and the relationships between these concepts. The time zone ontology documentation has all the details, including an outline of the ontology and the anticipted use.

In the US time zone instance file, the state instances are linking to Terry Payne's US States instances, and the county instances are linking to FIPS 55 County instances. The country instances in the world time zone instance file are linking to ISO Country instances.

Back to OWL-Time.