Azimuth - angular distance measured eastward from north around the celestial horizon. Sidereal Day - is just the time it takes the Earth to rotate once on its axis. Solar Day - the time it takes between noon one day until noon the next. It is about 4 minutes longer than a sidereal day because the Earth is also revolving around the sun as well as rotating around on its axis. Look at Figure 1-10 to help you remember.
Earth rotates West to East.
Some stars seasonal, others always seen, some are never seen. Earth revolves around the Sun. Seasonal Changes - are due to the tilt of the Earth's axis. Zodiacal Constellations - constellations through which the sun appears to move during the year. Sun goes above and below equator.