Supermoon fever finally breaks Wednesday with the third and last lunar show-off session of 2019 falling on the same evening as an equinox. To check out the show, all you need to do is step outside or go online. 

On March 20, the moon will be both full and at its closest point to Earth along its orbital path, known to astronomers as perigee syzygy. Consequently, scientists prefer to call it a perigee moon instead of a supermoon, a term with origins in astrology rather than astronomy.

In North America, the traditional name for a full moon in March is the "worm moon," because the month often brings warmer temperatures that allow all sorts of annelids to start wriggling about a little more. 

This last supermoon of the most recent series, which also gave us a "super blood wolf moon" (perigee syzygy with a total lunar eclipse in January) and a "super snow moon" in February, falls within hours of an equinox. In the Northern Hemisphere we think of the March equinox as ushering in spring, while it heralds the beginning of autumn south of the equator. 

Of course, seasons vary pretty widely depending on your local climate, but what we can say for sure scientifically is that the sun will rise and set almost exactly due east and west, respectively, on the day of the equinox. 

So bring together the worlds of astronomy, astrology and folklore and you get a "super worm equinox moon." 

What all this means for the casual skywatcher is that on Wednesday, the moon may appear up to 14 percent larger than a normal full moon. To really get a good look at the superness of the moon, you'll want to catch it as close as possible to moonrise. Fortunately, the moon will be coming up over the horizon in the east around the same time the sun is setting in the west, making for an all-around awesome evening. 

If the weather or life doesn't cooperate where you are, you can also watch a livestream of the event via the Virtual Telescope Project embed from Rome above.

If you miss it, you'll have to wait until February 2020 for the next supermoon. 

As always, if you catch any particularly spectacular views of the super sight, please share them with me on Twitter @EricCMack. 

First published March 11.
Update, March 18: Adds live stream and a few updated details.