On May 31, 2026 in the early morning hours, the Moon at 10 Sagittarius will oppose the Sun at 10 Gemini.
“Once in a blue moon,” as the saying goes, we have two full Moons in a single calendar month. May 1 was the first of this month’s pair, in Scorpio.
Blue Moons happen rarely, only about every 18 months. That’s because the Moon’s 29.5-day synodic month of phases with the Sun does not coincide with calendar months of 28 to 31 days. A Blue Moon is a good reminder that the Universe moves on its own timelines.
A Full Sagittarius Moon highlights polarities between two of the four mutable, or changeable, signs: Sagittarius in the fire element and Gemini in air. These two signs form an axis of knowledge. Gemini makes connections between data points and ideas. Sagittarius is like wild fire cutting through the weeds. Forget the minutiae; what’s the big picture?
Gemini seeks information for the sake of sharing it. Sagittarius wants to know what’s worth knowing. Gemini makes stories. Sagittarius turns stories into enduring myths. Sagittarius and Gemini need each other, like a forest needs trees.
One thing both Gemini and Sagittarius have in common is a quality of voraciousness. Gemini, ruled by planet Mercury, flies like winged Hermes, swiftly hooking up ideas and personalities. Sagittarius, ruled by Jupiter (a.k.a. Zeus, the King of the Gods) is expansive and can’t get enough of a good thing.
I’ve got some personal experience with the Sagittarius/Gemini pairing as my Moon sign is Sagittarius while Venus—what I love and value—is in Gemini. Do I need to collect and read yet another stack of books? Yes, I do! Both Gemini and Sagittarius thrive on food for the mind.
But these days, especially, one finds oneself in a chronic condition of information overload. This Full Moon in Sagittarius opposite the Gemini Sun prompts questions about the sheer quantity, let alone veracity, of the data we soak in.
In the midst of Gemini season, we’re just past a tense transiting square between Mars, traveling through fixed earth sign Taurus, and Pluto in the fixed air of Aquarius. This transiting square was exact from about May 24 to 27 and is now “separating” from exactitude at the time of the Full Moon. Mars is a force of direct assertion, including open warfare. Pluto is power, whether obvious or subterranean. The 90-degree transiting square between Mars and Pluto points to violent eruptions happening in places near and far.
At the May 31 lunation, there’s another, more subtle, transiting square in play. The Sun and Moon at 10 degrees of Gemini/Sagittarius will be “at the bendings,” just past a square with the nodes of the Moon.
The lunar nodes are the invisible points in the sky where the Moon’s orbit intersects the Earth’s path around the Sun. The symbolism of these points is studied in many different kinds of astrology. The south lunar node, likened to the tail of a dragon, is thought to represent the “past,” while the north or ascending node, is the head of a dragon, the “future.”
Evolutionary astrologer Mark Jones describes the lunar nodes not literally in terms of past and future but instead as what he calls an “oscillating destiny line,” felt at the individual and collective levels. The past is never really over; it carries on and shapes the present. The future is unknowable and unlikely to unfold as imagined.
At 18-month intervals, the Moon’s invisible nodes change their orbital position, moving backwards in zodiacal order through sign pairs. The lunar nodes are now in the signs of Virgo (south node) and Pisces (north node). Virgo and Pisces are mutable signs, like Gemini and Sagittarius.
Earth sign Virgo aims for perfection. It’s the sign of the critic, with a focus on work as service. Water sign Pisces is also about service, but it’s not so precise. Pisces seeks to accept things as they are and to extend compassion for all beings, no matter how flawed.
At the May 31 Blue Moon, with the Gemini Sun and Sagittarius Moon making squares to the lunar nodes, there’s pressure on what I call the knowledge axis—learning, processing information, knowing what’s true—as well as on the service axis of Virgo/Pisces, discerning what needs to be improved versus what just needs to be lovingly embraced.
The mode of all four of these signs—Gemini/Sagittarius, Virgo/Pisces—is mutable, meaning neither starting something new, nor stabilizing what’s established. Instead, everything’s wobbly, and hard to grasp. There’s potential for feeling uncertain about where one’s been and where one’s going next.
Contemplation of the Virgo/Pisces nodes square to the Sun and Moon brings up themes of the past—including memories, grief, and forgiveness—and of the future, including anticipation and aspiration. This is a Blue Moon of hesitation, and then, a time to consider what’s ripe for release.
Blessings for the May Blue Moon!
~ Sara
Sara R. Diamond, an astrologer based in the San Francisco Bay Area, is a life-long student and practitioner in several esoteric paths. Her style of astrology combines modern-psychological astrology with insights from traditional astrology. Sara is also an estate planning attorney. In addition, she has published four books on right-wing movements in the United States and earned her Ph.D. in Sociology at the University of California, Berkeley. You are invited to contact Sara via her website at www.SaraDiamondAstrology.com.
Leave a Reply