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Station Declination Date and Time (SDD)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: sdd.ttl
- Name
stationDeclinationDateTime- Datatype
- StationDeclinationDateTimeStrucText
- Definition
- The date and, optionally, time on which the station declination was measured.
- Description
- Midnight is understood to be 00:00:00 (the beginning of a day); when the time is not specified then midnight in the local time zone is typically implied.
- Accepted
- 2013-10-18
- Defined by
- NFDD
- Used by
- ZI103 Magnetic Variation Information
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.