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`ee00(`

`jdtt`, `epsa`, `dpsi`)

[SOFA] Returns the equation of the equinoxes (IAU 2000) given the TT
Julian Date

, the mean obliquity `jdtt`

(radians, mean of date), and the nutation in longitude
`epsa`

(in radians). All three parameters must have the
same dimensions. The returned value has those same dimensions, too,
and is measured in radians.
`epsa`

Greenwich apparent sidereal time (gast) is equal to Greenwish mean sidereal time (gmst) plus the equation of the equinoxes.

See also: Astronomical Coordinate Calculations