Full Moon Calendar 2026-2027: Every Date, Name, and How to Watch

The Next Two Years of Full Moons

2026 is a crowded year for moon-watchers. Thirteen full moons instead of the usual twelve, which means a Blue Moon on May 31. A rare close supermoon on March 3 — the Worm Moon swings to roughly 357,400 km from Earth, the closest full moon of the year by a noticeable margin. And a Christmas Eve full moon on December 24, something that happens only a handful of times per century.

2027 is quieter. Twelve full moons, standard spacing, no blue moon. But the Harvest Moon on September 15 falls unusually close to the autumn equinox — the tightest alignment of the decade.

Full moons still matter to people. Gardeners plant by them, anglers and hunters time trips to them, sleep researchers track them, and almost everyone notices when one is hanging low and fat over the horizon. The names we use — Wolf, Snow, Worm, Pink — came from farmers and Indigenous peoples trying to keep time without a printed calendar. The system worked. It still works.

Here's every full moon for the next two years, what each one is called, what makes some of them unusual, and how to actually watch.

What Is a Full Moon

A full moon happens when the Sun and Moon sit on opposite sides of Earth. From the ground, the entire near-side of the Moon is lit. That geometry is the whole definition — there is nothing astronomical about it beyond the alignment.

The Moon completes one full phase cycle every 29.53 days. That period is called the synodic month, and it's what your calendar is tracking when it marks full moon dates. A regular calendar year contains about 12.37 synodic months, which means most years see twelve full moons, but every two or three years a thirteenth squeezes in. That extra full moon is where Blue Moons come from.

The synodic month is longer than the Moon's actual orbital period around Earth (27.3 days, the sidereal month). The difference exists because Earth is moving around the Sun the whole time. By the time the Moon has finished one orbit, Earth has slid forward, and the Moon has to travel an extra two days to catch up to the same Sun-Earth-Moon alignment. Full moon is that alignment.

The Moon's orbit is not a perfect circle. Its distance from Earth swings between about 356,500 km (perigee) and 406,700 km (apogee) each month. When full moon coincides with perigee, you get a supermoon — visibly larger and noticeably brighter than average. When it coincides with apogee, you get a micromoon, which nobody notices unless somebody tells them.

The 2026 Full Moon Calendar

Thirteen full moons this year. Dates are UTC; your local date may shift by a day depending on time zone.

| Date (UTC) | Name | Notable |

|------------|------|---------|

| January 3 | Wolf Moon | |

| February 1 | Snow Moon | |

| March 3 | Worm Moon | Supermoon — closest of 2026 (~357,400 km) |

| April 1 | Pink Moon | April Fool's full moon |

| May 1 | Flower Moon | First full moon of May |

| May 31 | Blue Moon | Second full moon of May |

| June 29 | Strawberry Moon | |

| July 29 | Buck Moon | |

| August 28 | Sturgeon Moon | |

| September 26 | Harvest Moon | Closest to Sept 23 equinox |

| October 26 | Hunter's Moon | |

| November 24 | Beaver Moon | |

| December 23 | Cold Moon | |

January through March brings the cold-weather triad — Wolf, Snow, Worm. The March 3 supermoon is the headline event of early 2026. At roughly 357,400 km, it will look about 7% larger and 15% brighter than an average full moon. Visible difference: subtle, but real.

April through June opens with the Pink Moon on April 1 (not actually pink — see below) and closes with the Strawberry Moon on June 29. The big story is May: two full moons, three days short of a month apart, with the Blue Moon landing on May 31. The next Blue Moon after 2026 is in 2028.

July through September runs through the summer names — Buck, Sturgeon — into the Harvest Moon on September 26. A Harvest Moon is officially the full moon closest to the autumn equinox, and the 2026 version is three days after, which qualifies comfortably.

October through December closes the year with Hunter's, Beaver, and Cold. The December 23 Cold Moon is one day before Christmas Eve, which is unusual but not historic. (A full moon on Christmas Eve is what would make records.)

The 2027 Full Moon Calendar

Twelve full moons. No blue moon. Standard 12-count year.

| Date (UTC) | Name | Notable |

|------------|------|---------|

| January 22 | Wolf Moon | |

| February 20 | Snow Moon | |

| March 22 | Worm Moon | |

| April 20 | Pink Moon | |

| May 20 | Flower Moon | |

| June 18 | Strawberry Moon | |

| July 18 | Buck Moon | |

| August 16 | Sturgeon Moon | |

| September 15 | Harvest Moon | Closest Sept equinox of the decade |

| October 14 | Hunter's Moon | |

| November 13 | Beaver Moon | |

| December 12 | Cold Moon | |

Notice the pattern: full moons in 2027 land roughly 19 days earlier each month than they did in 2026. That's the normal drift — a 29.53-day synodic cycle against a calendar of 30- and 31-day months means dates slide backward by about a day per month on average. Over a full year the slide adds up, which is why this year's Wolf Moon (Jan 22) is much later in its month than 2026's (Jan 3).

The standout: September 15 Harvest Moon. The autumn equinox in 2027 falls on September 23, putting the Harvest Moon eight days before — the closest alignment the decade will see. For the Northern Hemisphere that means the harvest moon effect (the slow rising delay explained below) will hit with unusual strength.

Traditional Moon Names Explained

The names that appear in English-language calendars — Wolf, Snow, Worm, Pink, and the rest — come from a blend of sources. Indigenous peoples of the northeastern United States, particularly the Algonquin, used seasonal full moons as calendar markers long before European contact. Colonial American farmers added their own names. The Old Farmer's Almanac, which began publishing in 1792, standardized and popularized the current set in the 1930s. That's the main reason these specific names became the default.

• Wolf Moon (January) — named for wolves heard howling in the cold depths of winter near settlements. Alternates: Old Moon, Moon After Yule.
• Snow Moon (February) — the month of heaviest snowfall across much of temperate North America. Alternates: Hunger Moon, Storm Moon.
• Worm Moon (March) — when thawing ground brings earthworms back to the surface, drawing birds. Alternates: Crow Moon, Sap Moon.
• Pink Moon (April) — named for wild ground phlox, an early-spring pink wildflower, not for any color the Moon takes on. Alternates: Sprouting Grass Moon, Egg Moon, Paschal Moon.
• Flower Moon (May) — peak wildflower bloom across the Northern Hemisphere. Alternates: Corn Planting Moon, Milk Moon.
• Strawberry Moon (June) — wild strawberry harvest. In Europe, the same moon is called the Rose Moon.
• Buck Moon (July) — when male deer begin visibly growing new antlers. Alternates: Thunder Moon, Hay Moon.
• Sturgeon Moon (August) — when Great Lakes sturgeon were most easily caught by Indigenous fishermen. Alternate: Grain Moon.
• Harvest Moon (September) — the full moon closest to the autumn equinox, regardless of month.
• Hunter's Moon (October) — hunters used the bright post-harvest moonlight to stockpile meat before winter. Alternates: Blood Moon, Sanguine Moon.
• Beaver Moon (November) — beavers finish winter dam-building and trappers set final traps before the freeze. Alternate: Frost Moon.
• Cold Moon (December) — the longest nights and coldest temperatures arrive. Alternates: Long Nights Moon, Moon Before Yule.

A word of caution: these names are cultural artifacts, not astronomical categories. Different traditions — Celtic, Chinese, Hindu, Maori — use entirely different names anchored to their own seasonal observations. Historians also debate which Indigenous nations used which specific names, and the Almanac's published versions are a simplified composite. The Algonquin-Almanac tradition dominates English-language popular astronomy largely by publishing accident. Use the names because they're useful. Don't overstate their historical precision.

Supermoons and Blue Moons

Two terms that appear over and over in headlines, often without much rigor. Worth defining properly.

Supermoon. The term was coined in 1979 by astrologer Richard Nolle, who defined it as a full moon within 90% of its closest approach to Earth. Astronomers have since adopted the word loosely. A supermoon appears about 7% larger and 15% brighter than an average full moon, and roughly 14% larger and 30% brighter than the smallest full moons of the year. The size difference is real but hard to spot without a side-by-side comparison. The brightness difference is more noticeable, especially on a clear dark-sky night.

The March 3, 2026 Worm Moon is the closest supermoon of the year, at approximately 357,400 km from Earth. Most years include two or three supermoons in a row, spaced a month apart, as perigee drifts past full moon over several cycles.

Blue Moon. Two separate definitions have circulated, which is why the term keeps getting debated.

• Calendar Blue Moon (modern, popular): the second full moon in a single calendar month. Happens every 2-3 years on average. This is what May 31, 2026 is.
• Seasonal Blue Moon (original, Almanac): the third full moon in a season that contains four (most seasons contain three). This was the original meaning, but a 1946 Sky & Telescope article misinterpreted the rule, and the simpler "second full moon in a month" definition spread through popular culture. Both definitions are now considered correct.

The Moon does not turn blue. The phrase "once in a blue moon" is genuinely about rarity, and it predates either astronomical definition — English speakers used it figuratively as early as the 16th century.

Viewing Tips

Full moons are the easiest astronomical event to watch. Step outside. Look up. That's the entire requirement.

Moonrise is the best window. A full moon rises at sunset (by definition — it's opposite the Sun). For the first 20-30 minutes after it clears the horizon, it looks enormous, often orange or deep yellow, and sits beside familiar landmarks that give it scale. This is the moon illusion — a real perceptual effect, not an optical one — and it's at its strongest when the Moon is low.

Darker is better, but not required. Unlike meteor showers or deep-sky objects, the full moon is bright enough to punch through suburban light pollution. Rural skies help with photographs and with seeing the surrounding stars, but the Moon itself shows up anywhere.

No telescope needed. The Moon at full is in fact a poor telescope target — the Sun is lighting it straight-on, which flattens all the crater shadows. If you want to see craters and mountain ranges in relief, watch the Moon a few days before or after full, when side-lighting along the terminator (the line between lit and dark) casts dramatic shadows.

Bring binoculars. A pair of 7×50 or 10×50 binoculars shows craters, lunar seas (the maria), and major features without any setup. For many people, their first good binocular view of the Moon is the memorable one.

Phone cameras struggle. Default auto-exposure blows the Moon into a featureless white disc. If your phone has a Pro or Manual mode, drop ISO to 100, shorten shutter to 1/125 second, and tap-lock focus. Otherwise accept the white blob and shoot for composition instead — the Moon beside a tree, building, or horizon.

Does the Full Moon Affect You?

The most-asked question about the Moon. The honest answer: the effects are smaller than folklore claims, but they are not zero.

Sleep. A 2013 study from researchers at the University of Basel tracked 33 participants across full moon cycles in a controlled sleep lab with no visible moonlight. Around full moon, participants showed roughly 30% less deep (slow-wave) sleep, took longer to fall asleep, and had lower melatonin levels. A 2021 study published in Science Advances tracked 98 people across three years and found sleep onset delayed and total sleep shorter in the 3-5 days before full moon. Follow-up replications have been mixed — some studies find the effect, others don't — but enough signal exists that most sleep researchers treat it as a real, small effect of unclear mechanism.

Birth rates. Heavily studied, and the answer is consistent: no correlation. Large-scale reviews of hospital birth records across millions of births show no significant link between moon phase and birth frequency. The belief persists because maternity wards are always busy, and full moon nights stick in memory.

Animal behavior. This one is well-documented. Many species — coral spawning cycles, predator hunting patterns, nocturnal rodent activity, migration timing — genuinely respond to lunar cycles. The causal factor is usually moonlight itself (visibility for hunters and prey), not any mystical influence.

Human mood and behavior. Weakly supported at best. The "lunacy" belief (ER chaos, crime spikes, psychiatric admissions on full moon nights) has been tested many times and repeatedly fails to show up in the data. The cultural belief is strong; the evidence is not. Confirmation bias does most of the work.

If you want to know whether the full moon affects you personally, keep a two-month log of sleep, mood, and energy. Most people find correlations with stress and sleep debt that dwarf anything lunar. A minority find real lunar patterns. Both outcomes are legitimate.

Frequently Asked Questions

Can I see the full moon during the day?

Rarely, and only right at sunrise or sunset. Because a full moon rises as the Sun sets and sets as the Sun rises, it's on the opposite side of the sky from the Sun almost the entire time it's up. A thin overlap exists in the minutes around sunrise/sunset when both are above the horizon. During other phases (first quarter, waxing gibbous, waning crescent) the Moon is regularly visible in daylight.

Why does the moon look orange or red sometimes?

Atmospheric scattering. When the Moon sits low on the horizon, its light travels through a longer path of Earth's atmosphere. The atmosphere scatters blue wavelengths out of the beam, leaving red and orange to reach your eyes. The same effect reddens sunsets. During a total lunar eclipse, all of the light reaching the Moon has been refracted through Earth's atmosphere — which is why Blood Moons appear deep copper-red.

When is the next supermoon after 2026?

The first full moon supermoon of 2027 falls in late autumn, with perigee alignment around November 13. Most years contain a cluster of two to four consecutive supermoons, so 2026's March 3 event won't be the last one for long.

Do I need a telescope or special equipment?

No. Full moons are the one astronomical target that requires zero equipment. Binoculars enhance the view but aren't necessary. If you have a telescope, actually avoid using it on the night of full moon — try a few days before or after, when shadows along the terminator reveal crater depth and mountain ranges. First quarter and third quarter are the best telescope nights for the Moon.

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Full moons are the calendar markers humans have watched longer than any other. The names in this article predate printed calendars, clocks, and electric light. The astronomy behind them — the geometry of Sun, Earth, and Moon, the 29.53-day synodic cycle, the tug of perigee and apogee — predates the names by four billion years.

For the live lunar phase, illumination percentage, and a twelve-month visual calendar, check /moon-calendar. For tonight's aurora forecast and Kp index (the Moon's orbit doesn't drive these, but space weather does), see /aurora-tonight. For the wider picture of what the Sun and Earth's electromagnetic environment are doing right now, /dashboard puts everything in one view.

Additional writing on lunar phases, Schumann Resonance, and space weather lives on /blog.