Full moon 14% bigger than usual on Saturday, March 19, 2011
This Saturday (March-19, 2011) the full moon will be ca. 14% bigger and 30% brighter than full moons usually are. This happens only every 20 years and is based on the fact that the moon’s orbit around the earth is elliptical and therefore it has not always the same distance to earth.
The nearest orbital point to the earth is called Perigee whereas the opposite is called Apogee. Full moon and Perigee coincide only every 20 years and that’s the reason you should not miss this event.
According to NASA for the best viewing start looking when the moon is near the horizon at sunset.