Here are some useful sky and planetary maps, clear sky sites, lunar phase calendars, and space weather sites.
Our club supports the work don by Atilla Danko at http://www.cleardarksky.com in putting together these
predictions of observing conditions specifically intended for amateur astronomers. The data comes a
forecast model developed by Allan Rahill of the Canadian Meteorological Center.
Heavens Above: Great source for information on satellites, planets including minor planets, etc.