The second full moon of the month coincides with a micromoon, offering a unique viewing opportunity
Category: Arts & Culture
May 2026 is shaping up to be a spectacular month for astronomy enthusiasts, as it features not one, but two full moons. The first, known as the Flower Moon, occurred on May 1, and the second, a rare Blue Moon, will peak in the early hours of May 31. This phenomenon, which occurs roughly every two to three years, is not just a treat for sky watchers but also a reminder of the Moon's fascinating cycles.
The upcoming Blue Moon is set to reach its peak at 4:45 a.m. ET on Sunday, May 31, 2026. Interestingly, this full moon will also be classified as a micromoon, meaning it will be at its farthest point from Earth in its orbit, a position known as apogee. As a result, it may appear slightly smaller and dimmer than the typical full moon, though the difference is subtle and might go unnoticed by many observers.
The lunar month, which is approximately 29.5 days long, creates the conditions for a Blue Moon to occur. When the first full moon of the month falls on the very beginning of the month, it sets the stage for a second full moon to appear at the end. This specific occurrence is what gives rise to the term "Blue Moon"—a phrase that has come to symbolize rarity in everyday language.
NASA defines a Blue Moon as the second full moon in a single calendar month, a definition that emerged in popular culture during the 1940s. Prior to this, the term referred to the third full moon in a season that contained four full moons. The transition to the modern definition was solidified through various publications and media, leading to its widespread use today.
This Blue Moon is particularly special because of its rarity and because it coincides with a micromoon. The micromoon occurs when the Moon is at its farthest distance from Earth, which can make it appear about 14% smaller and 30% dimmer than when it is at its closest point, known as perigee. The last time a micromoon coincided with a Blue Moon was on October 31, 2020.
For those eager to catch a glimpse of this celestial event, the best viewing time will be just after sunset on Saturday, May 30, when the nearly full moon will rise. It will appear large and bright near the horizon, creating a stunning visual spectacle. The moon will then continue to brighten as it climbs higher into the night sky, reaching its full illumination by early Sunday morning.
As the Blue Moon rises in the sky, viewers will also be treated to a celestial alignment of Jupiter, Venus, and Mercury, which will be visible in the western sky. This added spectacle will provide a beautiful backdrop for the Blue Moon, making it a night not to be missed for stargazers.
Looking ahead, the next Blue Moon will not occur until December 31, 2028, making this May 31 event a particularly rare opportunity. For those who may be disappointed by the moon's lack of blue color—despite its name—it's important to note that the moon will not actually appear blue. The term "Blue Moon" has no relation to the moon's color; rather, it signifies the rarity of the event itself.
As for future full moons in 2026, the lunar calendar continues with the Strawberry Moon on June 29, Buck Moon on July 29, and Sturgeon Moon on August 28, among others. Each full moon carries its own unique name and significance, rooted in natural events and agricultural practices.
Weather conditions will play a key role in visibility for this astronomical event. Clear skies are ideal for viewing the Blue Moon, and forecasts will need to be monitored closely as the date approaches. In areas with cloud coverage, the view may be obstructed, making it important for stargazers to check local weather reports.
As excitement builds for the Blue Moon, astronomers and enthusiasts alike are encouraged to share their experiences and photographs of this unique event. Whether through social media or local astronomy clubs, the opportunity to connect with others over shared awe for the night sky is a wonderful aspect of such celestial phenomena. The next seasonal Blue Moon is expected on May 20, 2027, but for now, attention turns to the sky this May 31.
Maria Cortés González, a reporter for the El Paso Times, emphasizes the importance of community engagement during such events, stating, "Sharing the experience of witnessing a Blue Moon can create lasting memories and inspire a greater appreciation for our universe." With the Blue Moon just around the corner, it’s the perfect time to gather friends and family for a night of stargazing and wonder.