There is an hour, most months, when you look up and find the moon already full without having watched it fill.
It sits low over the rooftops, orange with dust and distance, larger than it has any right to be. An hour later it has climbed and paled and shrunk to a coin, and the frost on the glass holds a second, smaller moon inside it.
People have been naming that face for as long as there have been winters to outlast.
Not naming the moon itself. Naming the month it stands over — the wolf month, the snow month, the month the sturgeon run thick in the shallows. The name belongs to the world beneath the light as much as to the light.
Most lists give twelve such names. Some give thirteen. The difference is arithmetic, and it is the first thing worth understanding.
Why the Count Is Thirteen and Not Twelve
The moon takes roughly twenty-nine and a half days to go from full to full.
Twelve of those journeys come to about three hundred and fifty-four days. The sun takes eleven days longer to bring the year back to where it started.
So the moon drifts. Each year she arrives eleven days early, and the slippage gathers, and every two or three years a single calendar year holds thirteen full moons instead of twelve.
This is why the old calendars are full of patches and inserted months. It is also why the Wheel of the Year and the moon never quite shake hands. The sabbats are pinned to the sun and hold their places. The moons wander through them, arriving at Imbolc one year and a week ahead of it the next.
A witch who keeps both is keeping two clocks that disagree on purpose. The phases tell you where you are in the small month. The named moons tell you where the small month sits inside the long one.
Where the Names Came From
The familiar English list — Wolf, Snow, Worm, Pink, Flower, Strawberry, Buck, Sturgeon, Harvest, Hunter, Beaver, Cold — reaches most people through almanacs.
Almanacs were working books. They told a farmer when to sow and a trapper when the pelts would be thick, and a moon name was a memorable label for a stretch of weather and work.
Many published lists credit these names, vaguely and without a source, to Native American peoples. Treat that credit carefully.
Hundreds of distinct nations, hundreds of distinct languages and calendars, are not one tradition, and a name printed in English in a colonial almanac has passed through hands that rarely recorded whose name it was. Some of these labels do descend from Indigenous months. Others are plainly English farming speech. The lists themselves seldom tell you which is which.
The honest way to hold them is as almanac English: useful, atmospheric, and yours to use, but not something to present as the property of a people you cannot name. If that distinction matters to you — and it should — whose tradition a practice belongs to is worth reading before you build a devotion on borrowed vocabulary.
The Wolf Moon and the Snow Moon
January’s moon is the Wolf Moon, and the name carries its own weather. Hunger at the edge of the settlement. Sound travelling further than it does in summer, because cold air is a better conductor of grief.
It has also been called the Old Moon, and the Moon After Yule.
February takes the Snow Moon, for the month that historically buried the northern world deepest. Its other name is bleaker still — the Hunger Moon, for the season when the stores had thinned and the thaw had not yet come.
These two are the moons of endurance. Nothing is being grown, nothing is being gathered, and the only work is to keep the fire in and the door shut.
If you are drawn to work with the year’s own moods, these are the months for clearing out, for sitting still, for the long inward kind of magic that does not want an audience.
The Worm Moon and the Pink Moon
March belongs to the Worm Moon, named for the softening ground and the casts that appear on it, and for the birds that return to read them.
Its companions in the old lists are the Sap Moon, when the maples run, and the Crow Moon, and the Lenten Moon.
April’s Pink Moon is not pink. The name comes from a low creeping phlox, sometimes called moss pink, that carpets ground in that month across parts of North America.
The moon itself rises the same bone-white it always does, and every year the disappointment is rediscovered.
April has also been the Egg Moon and the Fish Moon. All three names point the same way: something that was closed is opening.
The Flower Moon and the Strawberry Moon
May carries the Flower Moon, and the name needs no defence. It is the month the hedgerows go white and the air turns thick and sweet after dusk.
The Milk Moon and the Corn Planting Moon share the month in older printings.
June is the Strawberry Moon, for the short wild harvest that comes and goes inside a few weeks. Elsewhere the same moon is the Rose Moon, the Mead Moon, the Honey Moon — the month of gathering what will be brewed and drunk later.
Because June sits near the summer solstice, the full moon of this month rides low. The sun stands at its highest, and the moon opposite it hangs close to the horizon, coloured by the whole thickness of the atmosphere.
It is often the most golden moon of the year, and the least willing to climb.
The Buck Moon and the Sturgeon Moon
July’s Buck Moon takes its name from antler. New growth pushes velvet-soft from the skull of the deer in this month, and by autumn it will be hard and polished and used.
July has also been the Thunder Moon, for the storms that build in the heat, and the Hay Moon, for the cutting.
August is the Sturgeon Moon, for the great fish once taken in quantity from the North American lakes in late summer. The Grain Moon and the Green Corn Moon belong to the same weeks.
These are the moons of the turn. Nothing looks like ending yet, and everything has begun to.
The light thickens. The evenings arrive a few minutes earlier each week, and the first ripe thing is picked.
The Harvest Moon and the Hunter’s Moon
Here the naming stops following the calendar and starts following the sky.
The Harvest Moon is not simply September’s moon. It is the full moon that falls nearest the autumn equinox, which means that in some years it moves into October and takes the name with it.
What makes it worth a name of its own is a real trick of geometry. Near the equinox the moon’s path lies at a shallow angle to the horizon, so successive moonrises come only a short while apart instead of the usual near-hour.
The result is several evenings running when a full or nearly full moon lifts clear of the fields at about the hour the sun goes down. There is no true darkness between the two lights.
Harvest could go on. That is the whole of the name.
The Hunter’s Moon is the one that follows it. October’s moon is also called the Blood Moon and the Dying Grass Moon, which is worth separating from the modern habit of calling any totally eclipsed moon a blood moon. An eclipsed moon turns red because it is lit only by sunlight bent through the whole rim of the Earth’s atmosphere. That is a different event, on a different schedule, and it is not what the old October name meant.
For the equinox itself and the fixed points of the solar year, see when the sabbats actually fall.
The Beaver Moon and the Cold Moon
November’s Beaver Moon is named for the animal finishing its lodge before the water closes, and for the trapping that followed. It has also been the Frost Moon and the Mourning Moon.
December’s is the Cold Moon, and the Long Night Moon, and the Oak Moon.
The December full moon rides higher and stays up longer than any other, because it sits opposite the lowest sun of the year. On a clear night it can be aloft for the better part of sixteen hours, throwing hard blue shadows across snow at three in the morning.
The year ends where it began — a cold face over a quiet world, and the wolves not far off.
The Thirteenth: the Blue Moon
When a year carries thirteen full moons, one of them has no name left to wear.
That extra moon is the blue one, and there are two rules for finding it, which disagree.
The older almanac rule is seasonal. Each season normally holds three full moons; when a season holds four, the third of the four is called blue. It is a strange rule until you see the logic — it protects the names that must stay anchored to the equinoxes and solstices by inserting the nameless moon before the last one.
The rule most people now use is simpler and younger. Two full moons inside one calendar month, and the second is blue. This meaning spread from a misreading of the older rule, printed in an astronomy magazine in the twentieth century and repeated until it became the common sense of the phrase.
Neither rule has anything to do with colour. The moon does very occasionally look blue, after great volcanic eruptions or vast wildfires, when particles of a particular size sit in the upper air and scatter the red out of the light. That is genuinely rare, and the saying about blue moons is older than either calendar definition, with an origin still argued over.
What a blue moon offers a practice is simply this: a full moon with no month’s work attached to it. Nothing is being sown or cut or trapped under it. It is unclaimed time, and many witches keep it for whatever has been waiting for room.
The Other List, and What It Is Worth
A second set of thirteen names circulates widely in modern craft books — Wolf, Storm, Chaste, Seed, Hare, Dyad, Mead, Wort, Barley, Blood, Snow, Oak, and sometimes Wine.
They are lovely words. Chaste for the white moon of early spring, Wort for the month of herb-cutting, Dyad for the pairing month.
They are also routinely labelled Celtic, or Old English, or medieval, and those labels do not survive much examination. The list appears in twentieth-century books without sources and is copied forward from there.
Use it if the words please you. That is a real reason. But do not tell anyone it is ancient, and do not build an argument on its authority, because there is none underneath it.
The craft is not damaged by admitting that a beautiful thing is recent. It is damaged by pretending otherwise and being found out.
Keeping a Moon Book
The surest way to make these names mean anything is to stop reading them for one year and watch instead.
You will need:
- A small book kept for this and nothing else
- A pen that does not fail in cold air
- A window that faces the sky, a doorstep, or any patch of open dark
- A candle, if the night asks for one, set where nothing can lean into the flame
On each full moon:
- Go to the window or step outside. Look first, for as long as you can stand the cold. Write afterwards.
- Write the date, and then nothing you have read anywhere. No name from any list.
- Write three lines on what the month has actually been doing where you live — what is flowering, what is dying back, what the air smells of, what the birds are at.
- Write the weather on the moon itself. Haze, halo, cloud crossing it, the colour at rising and the colour at height.
- Close the book. Do not read the year back until the thirteenth entry, or the twelfth if that is all the year gives you.
Such a record sits comfortably inside a book of shadows, though many keep it separate, because a moon book is observation and a book of shadows is work.
Naming Your Own Moons
At the end of that year you will find you have written the same word three or four times under one moon, without meaning to.
That word is the name.
It will rarely match the almanac. A city holds no beavers and no sturgeon, and a warm coast has no snow month at all. What it has instead is the moon that rises through the plane trees, the moon of the first open window, the moon that comes up the colour of a streetlight and fools you every time.
Those names are worth more to a practice than borrowed ones, because they were earned by looking. The old names were earned the same way by other people in other places.
What a Name Is Actually For
A named moon does not change what the moon does. It changes what you do.
Call a moon the Hunger Moon and you will find yourself thinking about what is thin, what is stored, what must be got through. Call the next one the Seed Moon and something turns forward.
This is the quiet usefulness of the whole system. Thirteen names are thirteen different questions asked at even intervals through a year, and few things keep a practice alive better than being asked something regularly.
Whether you mark the night with a full esbat, a single candle, or a jar set out on a sill — and if it is a jar, read what collected water is and is not for before you make any use of it — the name gives the night a shape it would not otherwise have.
The moon will rise regardless.
The naming is for you, standing at the cold glass, deciding what this particular month is going to be called.