Partial Eclipse of the moon:

In layman's language, during the eclipse today the full moon's brightness will slowly start reducing due to the earth's shadow falling on it (penumbral eclipse), and at a point in time a portion of the moon will become dark (partial eclipse), on it coming directly behind the earth.
Source: Wikipedia Then the reverse will happen. Slowly the moon l will move away from behind the earth, and then from its shadow to regain its full brightness. The total time of the eclipse, including the penumbral eclipse, is between 9.25 PM today and 2.20 AM (about 5 hours) tomorrow.
One can watch the lunar eclipse live on Slooh.com