# Connection between right ascension and time

 P: 368 Connection between right ascension and time There is time in the Hour Angle: $$LMST = GMST + time + Longitude/15$$$$HA = LMST - RA$$where LMST is Local Mean Sidereal Time in Hours. GMST is Greenwich Mean Sidereal time. The Sidereal Time above London, England. And time is in hours also.