Here is a map showing yesterday's cloud cover for Australia.
http://www.bom.gov.au/sat/solrad.shtml
and the current cloud cover for Australia.
http://www.bom.gov.au/products/IDE00902.loop.shtml
and the current cloud cover for the World.
http://www.die.net/earth/
Watch the sun rise and set all over the world on this real-time, computer-generated illustration of the earth's patterns of sunlight, darkness, and cloud cover based on current weather satellite data.