When will the next Halloween have a Full Moon?
In the year 2012 at midnight Eastern Standard Time, the moon will be 100% illuminated on October 29 and 30, and 98% illuminated on the 31st. This 98% of Full Moon will probably look indistinguishable from a Full Moon to most people. In 2020, there will be a 98% illumination on October 30, and 100% on the 31st which is a genuine Full Moon and the first one that is technically Full as well as apparently so.