Published in 2012, “Angle of Declination” is the first novel by husband-wife writing duo Doug and Sally Mayfield, who live in Deerwood. Described as about 75% autobiographical, ...

The angle between the two--known as the declination--varies depending on your location. It also gradually changes over time as the Earth's tectonic plates shift.

Declination is the angle in the horizontal plane between magnetic north and geographic north. It changes with time and geographic location. The declination angle varies between -90° and +90°.

The declination angle is the angle between an imaginary line connecting Earth-Sun centers and the equator. The declination angle varies as a function of season. It is 0 degrees at the Equinoxes ...

The pilot looks ahead and down, and sees the edge of the airfield at an angle of declination of 27.9 degrees. Flight Control calls back from the tower with some more details: ...

Because declination changes over time, newer maps will have more accurate figures. There should be an angle and a direction—for example, 8 degrees east. Working from an older map?

Magnetic declination is the angle between magnetic north and true north, and it’s also one of the primary places where beginner navigators mess up.

As if this wasn't enough of a nuisance for navigators, the Earth's magnetic field drifts, causing the angle of declination to change over time. In fact, it drifts about one-fifth of a degree a ...