Declination - Wikipedia, the free encyclopedia
In astronomy, declination (abbrev. dec or ?) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle.

Magnetic declination - Wikipedia, the free encyclopedia
The magnetic declination (usually refers to the true-magnetic angle but may specify grid magnetic angle in military circles) at any point on the Earth is the angle between the ...

declination - definition of declination by the Free ...
dec·li·na·tion (d k l-n sh n) n. 1. A sloping or bending downward. 2. A falling off, especially from prosperity or vigor; a decline. 3. A deviation, as from a specific direction or ...

www.ngdc.noaa.gov

Find Your Declination Adjustment Value
Magnetic declination adjustment values are easy to determine with these helpful map charts and page links.