A rare Blue Moon rose over the ancient Temple of Poseidon at Cape Sounion, Greece, on the night of May 31, 2026 [3, 4].
This celestial event is significant because it combined two rare lunar phenomena: a Blue Moon and a micromoon. While full moons are common, the alignment of these two specific characteristics creates a unique visual and orbital occurrence that attracts astronomers and photographers globally.
The term "Blue Moon" refers to the second full moon occurring within the same calendar month, a relatively rare event, a WION narrator said [1]. This particular event marked the second full moon in May 2026 [1].
In addition to being a Blue Moon, the event was a micromoon. This occurs when the moon is near apogee, the farthest point in its orbit from Earth. Because of this distance, the moon appears slightly smaller than usual, a The Weather Network staff member said [2]. According to reports, this was the smallest full moon of 2026 [5].
The moonrise was captured in dramatic images over the Cape Sounion coastline [4]. Jamie Carter Europe said the event provided a second dramatic moonrise in the same month [3].
Observers at the Temple of Poseidon witnessed the micromoon as it crested the horizon. The combination of the ancient Greek architecture and the diminished size of the lunar disk created a distinct silhouette against the night sky [4].
“The term "Blue Moon" refers to the second full moon occurring within the same calendar month, a relatively rare event.”
The occurrence of a Blue Micromoon highlights the intersection of the lunar calendar and orbital mechanics. While a 'Blue Moon' is a naming convention based on the calendar month, a 'micromoon' is a physical result of the moon's elliptical orbit. When these coincide, it provides a rare opportunity for astronomical observation of the moon at its minimum apparent size during a month with an extra full moon.
