Officially, the time for the current Supermoom was at 8:52 EST this past morning. However, this phase is a very gradual process; and this Full Beaver Moon will be just as bright early this evening, and more bright than it was 24 hours earlier. In other words, pragmatically tonight is the better night to Supermoon gaze; and appropriately on a Monday... "Moon's Day." The Moon has been extremely bright for a number of nights now, and will continue to be for a number of night's more.
'When to watch the closest supermoonWhen to watch the closest supermoon' (Bruce McClure - EarthSky.org - November 13, 2016)
I've been trying to let people know that the full Moon phase of this
supermoon event is a bit deceptive because the Moon is already and has
been visibly larger for quite a while now and the full Moon phase is
just one day out of this long slow close orbit. People are getting the
mistaken impression that the Moon will be somehow extra large just on
that one night and that's sad because they could have been enjoying the
visibly larger view all along as I have been. I was looking at the Moon
last night and the night before that and the night before that...
because I've been aware that the Moon's close orbit has been going on
for over a week and will continue for quite a while after the full Moon
phase as well.