The relationship between the Super Moon and Blue Moon: What's the connection?

A Roman priest once watched the sky for omens and recorded the moon’s phases by name. He would have recognized a Super Moon as a practical fact of orbital mechanics. A Blue Moon he would have found strange. The connection between them is not astronomical but cultural: both are modern labels for lunar events that ancient traditions observed without naming. A Super Moon occurs when a full moon coincides with the moon’s closest approach to Earth (perigee), making it appear larger and brighter. A Blue Moon is the second full moon in a single calendar month, a calendrical quirk that happens roughly every 2.5 years. The two phenomena share no physical mechanism, but they share a history of popular confusion and a growing place in contemporary lunar magic.

The moon’s orbit is not a perfect circle. It is an ellipse, and Earth sits off-center. When a full moon happens at the point where the moon is nearest to Earth (perigee), the moon can appear up to 14 percent larger and 30 percent brighter than a full moon at apogee (the farthest point). That is a Super Moon. The term itself is young. It was coined in 1979 by astrologer Richard Nolle, not by astronomers, and it entered popular use only in the 2010s. A Blue Moon has nothing to do with color. The phrase originally referred to something absurd or impossible (the moon made of green cheese, the moon turning blue). The modern definition — two full moons in one month — was popularized by a 1946 article in Sky & Telescope magazine that misinterpreted an older almanac rule. The mistake stuck.

Where Do the Names Super Moon and Blue Moon Actually Come From?

The history of both terms is a study in how language drifts away from its origin. Richard Nolle defined a Super Moon in 1979 as “a new or full moon which occurs with the moon at or near (within 90 percent of) its closest approach to Earth in a given orbit.” He was an astrologer writing in Horoscope magazine, and his definition included new moons (which are invisible) and set a specific distance threshold. Astronomers did not adopt the term. The public did, largely because of media coverage of the March 2011 Super Moon, which was the closest full moon in 18 years. NASA began using the term after that, and it became standard in popular science reporting.

The Blue Moon story is stranger. Before the 20th century, “blue moon” meant something that never happened, like “when pigs fly.” A 1528 rhyme ran “If they say the moon is blue, we must believe that it is true.” The modern definition emerged from a 1943 article in Sky & Telescope that quoted a 1937 Maine Farmers’ Almanac. The almanac used a complex rule for naming moons (four seasons, three full moons each, with the third called Blue when a season had four). The 1946 article simplified this to “two full moons in one month,” and that version spread through radio and newspapers until it became the accepted meaning. The almanac’s original rule was different. The public never learned it.

What Actually Happens During a Super Moon vs a Blue Moon?

The two events are physically unrelated. A Super Moon is a matter of distance. The moon’s orbit is elliptical, and perigee (the closest point) varies from about 225,000 miles to 252,000 miles. When a full moon lands within a day or two of perigee, the moon is measurably larger in the sky. The effect is real but subtle. Most people cannot tell the difference without a side-by-side photograph. The extra brightness (about 30 percent) is more noticeable, especially in dark rural skies.

What Actually Defines a Blue Moon?

A Blue Moon is a matter of timing. The lunar cycle (the synodic month) is 29.53 days. A calendar month is 30 or 31 days (February excepted). This mismatch means that every 2.5 to 3 years, one month will contain two full moons. The second one is called a Blue Moon. The moon itself does not change. It does not turn blue. It does not come closer. It is simply a full moon that happens to fall on a date that makes the calendar look unusual.

Can a Super Blue Moon Really Happen?

The two can coincide. A Super Blue Moon happens when a Super Moon falls as the second full moon of a month. This is rare. The last one occurred on August 30, 2023. The next will be in 2037. The media treats these as major events. For practitioners, they are simply two variables that align.

How Do These Events Appear in Esoteric and Occult Traditions?

How Do These Moons Fit Into Witchcraft and Magic?

Traditional lunar magic does not use the terms Super Moon or Blue Moon. The old grimoires and folk practices worked with the moon’s phase (waxing, full, waning, dark) and its position in the zodiac. A full moon in Aries was treated differently from a full moon in Pisces. The distance of the moon (perigee vs apogee) was not a factor in European folk magic before the 20th century. The reason is practical: you cannot see the difference with the naked eye. A farmer or a cunning woman watched the moon’s shape and its rising time, not its apparent size.

That said, the Super Moon has been absorbed into contemporary witchcraft and astrology. The reasoning is straightforward: if the moon’s gravitational pull affects tides and water, and the human body is mostly water, then a closer moon should have a stronger effect. This is not supported by physiology (the tidal force on a human body is negligible), but it has become a common belief in modern magical practice. Many practitioners treat Super Moons as amplified full moons, suitable for major workings, charging objects, and releasing old patterns.

The Blue Moon has a different symbolic history. Because the term originally meant something impossible, it was adopted in folklore as a time when the ordinary rules of magic might bend. A Blue Moon was considered a liminal event, a crack in the calendar. Some traditions treat it as a second chance: a full moon for intentions that were missed or blocked during the previous full moon. Others treat it as a time for trickster energy, for workings that require inversion or paradox.

What Is the Symbolic Meaning of Each Event?

What Does a Super Moon Symbolize in Occult Practice?

The Super Moon carries the symbolism of proximity and intensity. It is the moon at its most visible, its most demanding. In astrological terms, it amplifies whatever sign the moon is in. A Super Moon in Cancer (the moon’s own sign) is emotionally overwhelming. A Super Moon in Capricorn is structurally heavy. The symbolism is not subtle. It is the moon shouting.

The Blue Moon carries the symbolism of the exception. It breaks the pattern. In a tradition that works with the moon’s phases as a predictable cycle, the Blue Moon is the irregular beat. Some traditions treat it as a “moon of the forgotten” — a time to address what has been neglected. Others treat it as a “moon of the trickster”, a time when spells might backfire or produce unexpected results. The Blue Moon is not safe. It is the calendar’s glitch.

The two together (a Super Blue Moon) create a rare symbolic convergence: intensity plus irregularity. The moon is both closer than usual and out of its usual place in the month. This is treated in some contemporary traditions as a once-in-a-generation opportunity for major transformation, but also as a warning. The energy is not stable. It is a door that opens only briefly.

How Do Practitioners Work With Super Moons and Blue Moons?

How Do You Work Magic During a Super Moon or Blue Moon?

The practices vary by tradition, but some patterns emerge. For a Super Moon, the common approach is to treat it as a high-energy full moon. Workings that require extra force (banishing, charging, large-scale intention setting) are scheduled for the night of the Super Moon. Some practitioners avoid emotional or relationship work during a Super Moon, arguing that the amplified energy makes subtle intentions harder to hold. The moon is too loud.

For a Blue Moon, the approach is more cautious. Many traditions recommend working only with intentions that have been delayed or blocked. The Blue Moon is not for new beginnings. It is for finishing what was started. Some practitioners perform divination during a Blue Moon, treating it as a time when the usual patterns of fate are disrupted and unexpected answers may appear.

A common practice for both events is moon water. Water left under a Super Moon is considered more potent than ordinary full moon water. Water left under a Blue Moon is considered more unpredictable, suitable for boundary-breaking or confusion-casting workings. Practitioners who work with both will often label the jars separately and use them for different purposes.

What Are the Common Misconceptions About Super Moons and Blue Moons?

What Are the Biggest Misconceptions About Super Moons and Blue Moons?

The most persistent misconception is that a Super Moon is dramatically larger than a normal full moon. It is not. The 14 percent size difference is real but nearly invisible to the untrained eye. The “moon illusion” (the tendency for the moon to look larger near the horizon) is a separate phenomenon that has nothing to do with perigee. A Super Moon rising over a hill looks large because of the horizon effect, not because of its orbit.

The second misconception is that a Blue Moon is actually blue. It is not. The moon can appear blue only when volcanic ash or smoke particles in the atmosphere scatter red light, leaving blue. This happened after the 1883 Krakatoa eruption, when the moon appeared blue for months. That is a true blue moon, but it is not the same event as the calendrical Blue Moon. The two meanings are unrelated.

The third misconception is that Super Moons cause natural disasters. This belief spiked after the 2011 Super Moon coincided with the Tohoku earthquake and tsunami in Japan. The earthquake was not caused by the moon. The tidal forces at perigee are stronger than at apogee, but the difference is small, about 42 percent stronger at perigee, which is still a tiny fraction of the total gravitational force. Earthquakes are triggered by geological stress, not by the moon’s position. The correlation was coincidental.

FAQ

Can a Super Moon and a Blue Moon happen at the same time? Yes. A Super Blue Moon occurs when a full moon at perigee is also the second full moon of a calendar month. This happens roughly every 10 to 20 years.

How often does a Blue Moon occur? A Blue Moon (two full moons in one month) occurs about once every 2.5 years. The exact interval varies because the lunar cycle and the calendar do not align perfectly.

Is a Super Moon more powerful for magic than a regular full moon? Many contemporary practitioners treat it as such, but this is a modern belief. Traditional folk magic did not account for the moon’s distance because the difference is not visible to the naked eye.

Does a Blue Moon have any connection to the phrase “once in a blue moon”? Yes. The phrase originally meant something rare or impossible, and it predates the modern calendrical definition by centuries. The modern definition reinforced the phrase’s meaning of rarity.

The Super Moon and the Blue Moon are not connected by physics. They are connected by the human need to name the sky. One names a measurable change in distance. The other names a quirk of the calendar. Both have been adopted into contemporary magical practice as markers of intensity and exception. They are not ancient. They are not traditional. They are the sky as we have learned to read it in the last fifty years, and they work because we have agreed to let them work.

For a deeper understanding of how lunar cycles intersect with magical practice, see our guide to moon phases in witchcraft. The relationship between celestial events and ritual timing is explored in our glossary of astrological terms. For the specific practices associated with full moon workings, read our full moon ritual guide.