September 08, 2014 - 06:38 pm will be the last of our three Supermoons of 2014. THough not in October, this will be the Harvest Moon as it is full Moon nearest the autumnal equinox.
'A supermoon is the coincidence of a full moon or a new moon
with the closest approach the Moon makes to the Earth on its elliptical
orbit, resulting in the largest apparent size of the lunar disk as seen
from Earth'