The exact times the moon is completely full varies depending on time zone. Add 3 hours for New York and the Eastern side of the United States. For those who live in South America and other southern hemisphere areas the Snow MOON is in August as it is winter during northern hemisphere's summers. There is actually no dark side of the moon 100% of the time as various angles of the sun are presented on the moon, for example, when it's full to our eyes, it's dark on the other side, but when it's only a sliver to our view, it's bright on other sides. All sides of the moon are illuminated at various times in each month over exactly 27.3 days. It is always showing us only one side as although it rotates, it rotates at exactly the same speed as it circles the earth thus showing only one side. That is the standard theory. Other theories claim that light we think of as a Sun is a UFO. Yet others claim it's a reflection from Lake Universe the biggest body of water anywhere, or a projection from a Hollywood studio set much like a spotlight we used to see at drive in theaters or the projections we see of movie props popping up all over the world that make us believe things that are not true.