The first of two March 2018 full moons falls on the night of March 1-2, 2018. The second full moon of this calendar month will happen on March 31, 2018. By popular acclaim, the second of two full moons to occur in one calendar month is a Blue Moon.
No matter where you live worldwide, you can always expect to see a full moon lighting up the nightime from dusk until dawn. Because the moon stays more or less opposite the sun throughout the night tonight, look for the moon to rise in the east around sunset, climb highest up for the night around midnight and to set in the west around sunrise.
For North America and Hawaii, that means the moon turns precisely full this evening – on March 1, 2018 – at 8:51 p.m. AST, 7:51 p.m. EST, 6:51 p.m. CST, 5:51 p.m. MST, 4:51 p.m. PST, 3:51 p.m AKST and 2:51 p.m. HST.
For the Northern Hemisphere, the first full moon of March showcases the final full moon of winter; for the Southern Hemisphere, it’s the last full moon of summer.
On the other other hand, the second of these two March 2018 full moons will usher in the first full moon of spring for the Northern Hemisphere. In the Southern Hemisphere, this Blue Moon on March 31, 2018, will be the first full moon of autumn.
In most years, the Christian celebration of Easter happens on the first Sunday after the first full moon of a Northern Hemisphere spring. Sure enough, Easter will come on Sunday, April 1, 2018, the day after the full moon on Saturday, March 31, 2018.
For the Southern Hemisphere, the Blue Moon – the the second full moon of March 2018 – will also be their Harvest Moon, the closest full moon to the autumn equinox.
Bottom line: Wherever you might be on this night – the night of March 1-2, 2018 – enjoy the first of two March 2018 full moons and the final full moon of the season.
Bruce McClure has served as lead writer for EarthSky's popular Tonight pages since 2004. He's a sundial aficionado, whose love for the heavens has taken him to Lake Titicaca in Bolivia and sailing in the North Atlantic, where he earned his celestial navigation certificate through the School of Ocean Sailing and Navigation. He also writes and hosts public astronomy programs and planetarium programs in and around his home in upstate New York.