This year's first supermoon is almost here! The worm moon will brighten the night sky on Monday, March 9.Because Native Americans named full moons to track seasons, the names often correlate with nature. According to the National Geographic, March's full moon is also called a worm moon because earthworms begin to appear due to the spring temperature changes. The cawing of crows also signals the end of winter, so another name for March's full moon is a "crow moon." The full moon is also called a "sap moon" because the sap of sugar maple trees begins to flow around this time.The worm moon will be the first of three supermoons in 2020, according to EarthSky. This means that the moon will coincide with perigee, the point in the moon's orbit at which it's closest to Earth. When the moon's at perigee, it appears brighter and larger than a standard moon. The worm moon will be this year's second-closest full moon to Earth. When's the best time to see it? The moon will appear full from dusk until dawn on both March 8 and March 9. It'll reach its peak fullness at 1:48 p.m. EDT on Monday. So give spring an early welcome and gaze at this year's brightest full moon yet.Related: Scientists find a new mini-moon in earth's orbit