It’s called a worm moon because the ground is (supposedly) warmer and thawing, albeit a little wet, and the worms return, bringing the birds. The name reflects the return to spring. There’s no lunar eclipse happening with this one, so no blood moon. A few things will happen in the skies Wednesday night. The vernal equinox will happen about 5:58 p.m. ET. This marks the first day of spring because day and night are of equal length, and the northern hemisphere will start tilting towards the sun. Moonrise is about 20 minutes before 7 p.m. ET, a little before sunset. The moon will become full at 9:43 p.m. ET. But don’t go to bed because the supermoon isn’t until 3:47 a.m. ET. That’s when the moon will be at its closest point to Earth in its orbit, turning it into a supermoon because it’ll appear slightly larger than normal full moons.