Re: An hour before dawn.
Our sky will seem busy with the moon in Sagittarius (marks the center of our galaxy) an hour before dawn. Scorpius is to the right of Sagit. A sure sign that Spring and Summer are not far off... when those two constellations will be visible in our evening/night's sky.
http://www.earthsky.org/Features/Skywatching/today.html At that site, you can click to the next day, etc. to get previews.
Orion reigns supreme on these evenings (Canis and the Pleides seem to be good company. lol)
Marcia