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Rule

Each ICAO data set shall, conditionally, be provided together with metadata giving a description of the temporal reference system used in the data set or a citation for a document that describes that describes that temporal reference system when a temporal reference system other than the Gregorian calendar and Coordinated Universal Time (UTC) is used.

Requirement

Reference

DS-META-006



Element Name

Temporal reference system



Obligation / Condition

Mandatory if a reference system other than the Gregorian calendar and Coordinated Universal Time (UTC) is used.



Multiplicity

0..1


ISO 19115 (2003)

Number

13



Name

referenceSystemInfo



Definition

Description of the spatial and temporal reference systems used in the dataset



XPath

gmd:MD_Metadata/gmd:referenceSystemInfo



Data type

RS_Identifier



Domain

Free Text



Example

ISO 8601


Implementing Instructions



-


Example
<gmd:MD_Metadata>
...
 <gmd:referenceSystemInfo>
  <gmd:MD_ReferenceSystem>
   <gmd:referenceSystemIdentifier>
    <gmd:RS_Identifier>
     <gmd:code>
      <gco:CharacterString>8601</gco:CharacterString>
     </gmd:code>
     <gmd:codeSpace>
      <gco:CharacterString>ISO</gco:CharacterString>
     </gmd:codeSpace>
    </gmd:RS_Identifier>
   </gmd:referenceSystemIdentifier>
  </gmd:MD_ReferenceSystem>
 </gmd:referenceSystemInfo>
...
</gmd:MD_Metadata>
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