Get magnetic declination for given time and place. It's an adaptation of the World Magnetic Model by the NOAA National Geophysical Data Center.
$ npm install geomagnetism --saveconst geomagnetism = require('geomagnetism');
// information for "right now"
const info = geomagnetism.model().point([44.53461, -109.05572]);
console.log('declination:', info.decl);
// use a specific date
const model = geomagnetism.model(new Date('12/25/2017'));
const info = model.point([44.53461, -109.05572]);
console.log('declination:', info.decl);Copyright © 2015–2021 Natural Atlas, Inc. & Contributors
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