SiderealTime
SiderealTime[] gives the right ascension of the local meridian for the current date and location.
SiderealTime[date] gives the right ascension of the local meridian for the specified date.
SiderealTime[loc] gives the right ascension of the local meridian for the specified location.
SiderealTime[loc,date] gives the right ascension of the local meridian for the specified date and location.
SiderealTime[{{loc1,date1},{loc2,date2},…}] gives the right ascensions of the local meridians for all specified locations on the specified dates.
SiderealTime[loc,date,func] uses func to determine what to return for extended locations.
SiderealTime["MeanTime",loc,date,func] gives the mean sidereal time for the specified date, location and aggregation function.
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