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Magnetic Variation (MAG)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: mag.ttl
- Name
magneticVariation- Datatype
- Realm180to180
- Definition
- The angular difference between True North and Magnetic North measured at a given position and date.
- Description
- The value given indicates whether the angular difference is East (positive) or West (negative) of True North. True North is the direction of the northern point at which the geographic meridian lines meet.
- Synonyms
- Magnetic Declination
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Physical quantity
- planeAngle
- Recommended unit
- Arc Degree
- Used by
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.