A total solar eclipse set to be the longest in duration in the 21st century will occur in China, Japan, India and other parts of Asia on July 22, 2009.

whereby "A total solar eclipse occurs when the moon passes between the Sun and the Earth so that the Sun is fully covered. This can only happen during a new moon , when the Sun and Moon are in conjunction as seen from the Earth... "

as the NASA website is flooded . i took the above from wiki ...

anyway if u missed morning telecast ,
u can watch a total solar eclipse special at 11:30pm tonight

Recorded; 9:50 AM