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Grid Variation Date and Time (GVD)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: gvd.ttl
- Name
gridVariationDateTime- Datatype
- GridVariationDateTimeStrucText
- Definition
- The date and, optionally, time on which the grid variation was calculated.
- 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
- DFDD
- Used by
- ZI103 Magnetic Variation Information
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.