calc_gmst_gast

rubin_sim.utils.calc_gmst_gast(mjd)

Compute Greenwich mean sidereal time and Greenwich apparent sidereal time see: From http://aa.usno.navy.mil/faq/docs/GAST.php

@param [in] mjd is the universal time (ut1) expressed as an MJD

@param [out] gmst Greenwich mean sidereal time in hours

@param [out] gast Greenwich apparent sidereal time in hours