astro::moon_phase Namespace Reference

Namespaces
namespace	phase_moments
namespace	detail
namespace	new_moon
namespace	illumination

Functions
auto	longitude_diff (const double jde) -> double
	Calculate the difference between the apparent longitudes of the Moon and the Sun.

Function Documentation

longitude_diff()

auto astro::moon_phase::longitude_diff ( const double jde ) ->double

inlinenodiscard

Calculate the difference between the apparent longitudes of the Moon and the Sun.

Parameters

jde	The Julian Ephemeris Day on the TT scale.

Returns

Moon minus Sun apparent longitude, in [0°, 360°).

See also

VSOP87D, ELP2000-82B, and Astronomical Algorithms, Jean Meeus, 1998.