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## Package org.opengis.temporal

Interface Summary
Calendar | A discrete temporal reference system that provides a basis for defining temporal position to a resolution of one day.
CalendarDate | A data type that shall be used to identify temporal position within a calendar.
CalendarEra | Characteristics of each calendar era.
Clock | Provides a basis for defining temporal position within a day.
ClockTime | A data type that shall be used to identify a temporal position within a day.
DateAndTime | Provides a single data type for identifying a temporal position with a resolution of less than a day.
Duration | A data type to be used for describing length or distance in the temporal dimension.
Instant | A zero-dimensional geometric primitive that represents position in time, equivalent to a point in space.
IntervalLength | A data type for intervals of time which supports the expression of duration in terms of a specified multiple of a single unit of time.
JulianDate | The Julian day numbering system is a temporal coordinate system that has its origin at noon on 1 January 4713 BC in the Julian proleptic calendar.
OrdinalEra | Provides a reference to the ordinal era in which the instant occurs.
OrdinalPosition | A data type that shall be used for identifying temporal position within an ordinal temporal reference system.
OrdinalReferenceSystem | Provides only the attributes inherited from temporal reference system.
Period | A one-dimensional geometric primitive that represent extent in time.
PeriodDuration | Uses the format specified by ISO 8601 for exchanging information about the duration of a period.
Position | A union class that consists of one of the data types listed as its attributes.
Separation | Provides operations for calculating temporal length and distance.
TemporalComplex | An aggregation of temporal primitives.
TemporalCoordinate | A data type that shall be used for identifying temporal position within a temporal coordinate system.
TemporalCoordinateSystem | A temporal coordinate system to simplify the computation of temporal distances between points and the functional description of temporal operations.
TemporalEdge | One-dimensional topological primitive in time.
TemporalGeometricPrimitive | An abstract class with two subclasses for representing a temporal instant and a temporal period.
TemporalNode | A zero dimensional topological primitive in time.
TemporalObject | Base interface for temporal object.
TemporalOrder | Provides an operation for determining the position of this temporal primitive relative to another temporal primitive.
TemporalPosition | Used for describing temporal positions referenced to other temporal reference systems.
TemporalPrimitive | An abstract class that represents a non-decomposed element of geometry or topology of time.
TemporalReferenceSystem | Provides information about a temporal reference system.
TemporalTopologicalComplex | An aggregation of connected temporal topological primitives.
TemporalTopologicalPrimitive | Represents a single non-decomposable element of topology and its relationships to other topological primitives within a topological complex.

Class Summary
IndeterminateValue | Provides 4 values for indeterminate positions.
RelativePosition | Values for relative temporal position based on the 13 temporal relationships identified by Allen (1993).

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