WMM - World Magnetic Model
Latitude :
degrees (- for S)
Longitude :
degrees (- for W)
Altitude :
kilometres AMSL
Date :
/
/
:
year/mm/dd hh:mm range 2010-2015
using above
OR
Select Location:
KSFO 13.83
LPFO 0.01
SAWH 12.64
YMHB 14.9
OR
each
(millisecs)
Values given here can be checked at
http://www.ngdc.noaa.gov/geomag-web/#declination