TimePeriod

gml:TimePeriod

EX_Extent

Elements			Domain	Definition and Recommended Practice	Examples
1	gml:description	0..1	xsd:string	Textual description of the date and time documented.
2	gml:descriptionReference	0..1	xsd:string
3	gml:identifier	0..1	xsd:string
4	gml:name	0..*	xsd:string
5	gml:relatedTime	0..*	gml:TM_Primitive
5	gml:beginPosition	1	xsd:date xsd:dateTime	The beginning date or date and time of the resource contents. Use the ISO 8601 extended standard: YYY-MM-DD or YYY-MM-DDThh:mm:ssZ.	beginPosition: 2010-06-05T12:00:17
6	gml:endPosition	1	xsd:date xsd:dateTime	If the resource has a status of 'ongoing' then use the indeterminatePosition attribute without an end date value. The ending date or date and time of the resource contents. Use the ISO 8601 extended standard: YYY-MM-DD or YYY-MM-DDThh:mm:ssZ.	endPosition: 2010-06-05T12:00:17 endPosition: indeterminatePosition="now"
7	gml:duration	0..1	xsd:duration	Provide either gml:duration or gml:timeInterval if applicable. Length of time between measurements. Use the ISO 8601 syntax for temporal length.	duration: P1D
8	gml:timeInterval	0..1	xsd:decimal	Provide either gml:duration or gml:timeInterval if applicable. Frequency between time events based on floating point values for temporal length.	timeInterval unit="hour": 1.0

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ISO Legend

Possible Parent Elements

Please contribute!

• ISO Extents
• GML Guidance for ISO Metadata

<gml:TimePeriod gml:id="someTimeID">
  <gml:beginPosition>1846</gml:beginPosition>
  <gml:endPosition indeterminatePosition="now"/>
</gml:TimePeriod>                    

<gml:TimePeriod gml:id="timeId">
 <gml:beginPosition>1992-01-01T00:00:00Z</gml:beginPosition>
 <gml:endPosition>2007-12-31T00:00:00Z</gml:endPosition>
<gml:timeInterval unit="hour">6</gml:timeInterval>
</gml:TimePeriod>