TL;DR
A blue moon will occur on the night of May 30-31, marking the second full moon in a month. The peak will be at 4:45 a.m. ET, and the event will feature a micromoon, appearing slightly smaller than usual. It is a rare astronomical event happening roughly every two to three years.
A blue moon will be visible this weekend, with the peak at 4:45 a.m. ET on May 31, making it a rare celestial event that occurs roughly every two to three years. The event is confirmed by astronomical sources and is notable for its infrequent occurrence. Learn how to catch the perfect full moonrise for a better viewing experience.
The upcoming blue moon will be the second full moon in May, a phenomenon that happens approximately every 2.7 years. The full moon will reach its peak at 4:45 a.m. ET on Sunday, May 31, and will be visible across the Americas, Africa, and Europe. The moon will also be a micromoon, meaning it will appear slightly smaller due to its position near apogee, the farthest point from Earth in its orbit. Despite its name, the moon will look its usual silvery white or golden hue, not blue.
This event is confirmed by NASA and EarthSky, with experts noting that the moon’s apparent size difference will be minimal to the naked eye. The blue moon’s occurrence is tied to the lunar cycle, which lasts about 29.5 days, leading to months with two full moons. The last such event was in 2023, which was a supermoon, not a blue moon. The next blue moon will be in 2037, according to The Old Farmer’s Almanac.
Why It Matters
This blue moon is significant because it is a rare astronomical event, occurring roughly every two to three years. It provides an opportunity for skywatchers to observe a full moon that appears twice in a calendar month, a phenomenon that has cultural and scientific interest. The event also coincides with the micromoon, offering a slightly different visual experience for observers. Such events can inspire public interest in astronomy and space science.
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Background
The lunar cycle’s mismatch with the calendar creates the possibility of two full moons in one month, known as a blue moon. The phrase originated in the 1500s and was first documented in the 1937 Maine Farmer’s Almanac. Find out how to catch the perfect full moonrise during upcoming lunar events. Historically, the term has been associated with rare or impossible events, but astronomically, it refers to specific lunar phenomena. The last blue moon was not a micromoon, but a supermoon, which occurs when the full moon coincides with perigee, its closest approach to Earth.
“Despite the name, the moon will look its usual silvery white or golden hue; the ‘blue’ refers to the calendar event, not its color.”
— Dr. Pamela Gay, senior scientist at the Planetary Science Institute
“The full moon will peak at 4:45 a.m. ET on May 31, and it will be visible across many parts of the world.”
— EarthSky, astronomical organization
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What Remains Unclear
It is not yet confirmed how many people will be able to observe the moon clearly due to weather conditions, and some may miss the peak timing depending on their location. Additionally, the moon’s appearance might be slightly less prominent due to its status as a micromoon, but this difference is minimal and unlikely to be noticeable without comparison.
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What’s Next
After this event, the next blue moon will occur in 2037. Skywatchers are encouraged to observe the moon on the night of May 30-31, around the peak time, and to use photography tools if interested in capturing the event. Astronomers will continue monitoring lunar cycles for future occurrences.
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Key Questions
When is the best time to see the blue moon?
The moon will peak at 4:45 a.m. ET on May 31, but it will be visible from sunset on May 30 through the early morning hours of May 31, depending on your location.
Will the moon really appear blue?
No, despite the name, the moon will appear its usual silvery white or golden hue. The term ‘blue moon’ refers to the calendar event, not its color.
Can I photograph the blue moon?
Yes, especially during the early evening or just before sunrise. Using a smartphone or camera with zoom capabilities can help capture the event. Learn tips for photographing the full moon around sunset on May 30 or the peak at 4:45 a.m. ET on May 31.
Why is this event called a blue moon?
The phrase originated in the 1500s and was first documented in 1937. It now refers to either the second full moon in a calendar month or a seasonal blue moon, depending on context.
Source: Google Trends
