The local sidereal time is the RA of the meridian. The hour angle (HA) of an object is the difference LST-RA. To locate an object in the local sky you must compute the local sidereal time, and then the HA to find where it is with respect to the local meridian.
10. Does RA increase from west to east or from east to west, and why? What does this say about the sign of the HA?
11. Approximately what is the RA of the meridian at midnight over the Gheens Hall on March 1?
12. On what date would you expect that Sirius would be on the meridian (transits) at midnight?
13. If Sirius transits at 22:20 tonight, at about what time would it transit tomorrow night?
14. If Sirius transits at 22:20 in Louisville, at what time would it transit in Lexington (longitude 84 deg 29 min 46 sec)?