Calculate Magnetic Declination (2000.0 values)
Author: yamoExecutions: 22326
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Calculate the declination (the difference between true north and the north indicated by a compass). Please enter the latitude and longitude (ITRF coordinate system, GRS80 ellipsoid coordinates) of the location you wish to calculate.
| West-biased | degrees |
This program uses a formula that standardizes the declination values obtained from geomagnetic surveys across Japan to those recorded at 00:00 (UTC) on January 1, 2000, and approximates the nationwide distribution of declination using quadratic equations for latitude and longitude. (Because this is an approximation, errors may be significant in certain regions.)
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