Content standards for digital geospatial metadata -- FGDC
9: Time Period Information -- information about the date and time of an event.
This section provides a means of stating temporal information, and is used
by other sections of the metadata standard. This section is never used
alone.
Syntax:
- Time_Period_Information =
- [Single_Date/Time | Multiple_Dates/Times | Range_of_Dates/Times ]
- Single_Date/Time =
- Calendar_Date + (Time_of_Day)
- Multiple_Dates/Times =
- 2{Calendar_Date + (Time_of_Day) }n
- Range_of_Dates/Times =
- Beginning_Date + (Beginning_Time) + Ending_Date + (Ending_Time)
Semantics:
- Single Date/Time --
9.1
- means of encoding a single date and time.
Compound.
- Calendar Date --
9.1.1
- the year (and optionally month, or month and day).
- Type: date
- Domain: "Unknown" free date
- Time of Day --
9.1.2
- the hour (and optionally minute, or minute and second) of the day.
- Type: time
- Domain: "Unknown" free time
- Multiple Dates/Times --
9.2
- means of encoding multiple individual dates and times.
Compound.
- Calendar Date -- (9.1.1)
- Time of Day -- (9.1.2)
- Range of Dates/Times --
9.3
- means of encoding a range of dates and times.
Compound.
- Beginning Date --
9.3.1
- the first year (and optionally month, or month and day) of the event.
- Type: date
- Domain: "Unknown" free date
- Beginning Time --
9.3.2
- the first hour (and optionally minute, or minute and second) of the day for the event.
- Type: time
- Domain: "Unknown" free time
- Ending Date --
9.3.3
- the last year (and optionally month, or month and day) for the event.
- Type: date
- Domain: "Unknown" "Present" free date
- Ending Time --
9.3.4
- the last hour (and optionally minute, or minute and second) of the day for the event.
- Type: time
- Domain: "Unknown" free time
June 8, 1994