temporal reference system

The primary temporal reference system for use with geographic information is the Gregorian Calendar and 24 hour local or Coordinated Universal Time (UTC), but special applications may entail the use of alternative reference systems. So this element is mandatory only if the spatial data set contains temporal information that does not refer to the default temporal reference system.

temporal reference system

The primary temporal reference system for use with geographic information is the Gregorian Calendar and 24 hour local or Coordinated Universal Time (UTC), but special applications may entail the use of alternative reference systems. So this element is mandatory only if the spatial data set contains temporal information that does not refer to the default temporal reference system.