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The full Worm “Blood” Moon reaches its peak in the morning hours of Friday, March 14. What is a Worm Moon? What is a Blood Moon? Here are the real meaning and origins of March’s full Moon—and when you can see this Moon at its brightest!
2025 March Lunar Eclipse: The Blood Moon
However, this is more than just another full Moon! There is also going to be a Total Lunar Eclipse, also known as a Blood Moon. During a lunar eclipse, the Sun, Moon, and Earth all align so that the Earth comes in between the Moon and Sun. This means that the Earth will cast a shadow over the Moon (also known as the umbra). When the Moon is in the umbra of the Earth, the Earth casts a reddish shadow, hence the name Blood Moon.
This lunar eclipse is visible from all of North America. The Moon will enter the penumbra at 11:56 P.M.EDT (8:56 P.M.PDT) on March 13 and the umbra at 1:09 A.M.EDT on March 14 (10:09 P.M.PDT, March 13). It will leave the umbra at 4:48 A.M.EDT (1:48 A.M.PDT) on March 14 and the penumbra at 6:02 A.M.EDT (3:02 A.M.PDT).
Specifically, March’s full Worm “Blood” Moon reaches peak illumination at 2:55 A.M. ET on Friday, March 14, 2025.
Of course, you don’t have to wait until the middle of the night to see the Moon! Look for the spectacularly bright Moon as it rises above the horizon on Thursday evening. If your weather is poor on Thursday night, try again on Friday! See when the Moon will be visible in your area.
If you have just a bit of rain on either of these nights, you may even get to spot a rare phenomenon called a moonbow. A moonbow is just like a solar rainbow but is created by moonlight (rather than sunlight) when it is refracted through water droplets in the air. Moonbows only happen when the full Moon is fairly low in the sky, so look for one in the hours after sunset when the sky is dark. Learn more about moonbows here!
This March Moon will look especially large to us when it’s near the horizon because of the “Moon illusion,” which is when it looks bigger when near comparative objects than it does when it’s high in the sky without any references.
Why Is It Called the Worm Moon?
The full Moon names used by The Old Farmer’s Almanac come from a number of places, including Native American, Colonial American, and European sources. Traditionally, each full Moon name was applied to the entire lunar month in which it occurred, not only to the full Moon.
The Surprising Truth Behind the Worm Moon Name
March’s full Moon goes by the name Worm Moon. For many years, we thought this name referred to the earthworms that appear as the soil warms in spring. This invites robins and other birds to feed—a true sign of spring!
However, more research revealed another explanation. In the 1760s, Captain Jonathan Carver visited the Naudowessie (Dakota) and other Native American tribes and wrote that the name Worm Moon refers to a different sort of “worm”—beetle larvae—which begin to emerge from the thawing bark of trees and other winter hideouts at this time.
Alternative March Moon Names
There are quite a few names for the March Moon that speak to the transition from winter to spring. Some refer to the appearance (or reappearance) of certain animals, such as the Eagle Moon, Goose Moon (Algonquin, Cree), or Crow Comes Back Moon (Northern Ojibwe), while others refer to signs of the season:
The Sugar Moon (Ojibwe) marks the time of year when the sap of sugar maples starts to flow.
The Wind Strong Moon (Pueblo) refers to the strong, windy days that come at this time of year.
The Sore Eyes Moon (Dakota, Lakota, Assiniboine) highlights the blinding rays of sunlight that reflect off the melting snow of late winter.
An alternative name for March’s full Moon is the Sugar Moon. Sugar maples are tapped in late winter; sap buckets gather the sap, which is later turned into maple syrup!
Moon Phases for March 2025
All dates and times listed here are Eastern Time. See our Moon Phase Calendar for local times.
Each month, we explain the traditional names of the full Moon along with some fascinating Moon facts. In this video, learn about the full Worm Moon, Moon illusions, and when and why the Moon rides high or low in the sky. Click below to watch the video.
Best Days in March 2025
Below are the best days for activities based on the Moon’s sign and phase in March.
For Planting: Aboveground crops: 7-9 Belowground crops: 17-19
Catherine Boeckmann loves nature, stargazing, and gardening so it’s not surprising that she and The Old Farmer’s Almanac found each other. She leads digital content for the Almanac website, and is also a certified master gardener in the state of Indiana. Read More from Catherine Boeckmann
Most earthworms in the US are not native to the US and were brought here after Columbus, so it makes even more sense that native Americans wouldn't be referring to them.
What's more, the sun and the moon at times squabble about who will wrap me up around evening time. Assuming you think I am having a good time than anybody on this planet, you are totally right. A Lunarian Thought: Living in the Moon
Please write an article about Ramadan - it starts for the Moslem religion with a full moon at the beginning of April - and lasts for approx. 1 month ending in EID - but I do not know the name of the moon. Thanks, Susan