The last supermoon of 2017 will be visible this Sunday night, just after sunset. 

The technical definition for a supermoon is as follows:

A supermoon is a full moon or a new moon that approximately coincides with the closest distance that the moon reaches to earth in its elliptic orbit, resulting in a larger-than-usual apparent size of the lunar disk as seen from the Earth.

Basically, it's a moon that looks a little bit bigger. Pretty cool.

The best viewing is said to be Sunday night just after sunset even though the moon will be at it's closest around 4 AM local time. Why isn't the best time to see it at 4 AM? I don't know. I'm not a scientist, just a dope on the radio. Either way, this is probably a cool event to take in with your kids.

Don't fret if you miss it though. Another supermoon will be visible towards the end of January.