Recompute the sidereal time in the apparent to observed place star-independent parameter block.
date double UTC date/time (Modified Julian Date, JD-2400000.5) (see slaAoppa source for comments on leap seconds) aoprms double[14] star-independent apparent-to-observed parameters (0-11) not required (12) longitude + eqn of equinoxes + sidereal dut (13) not required
(0-12) not changed (13) local apparent sidereal time (radians) For more information, see slaAoppa.
slaGmst P.T.Wallace Starlink 31 October 1993