The topic What is a Blue Moon? Why the May full moon is so rare. is drawing steady attention: readers, analysts, and industry watchers are all tracking how the story may unfold in the days ahead.
This is taking place in a fast-moving context — product cycles, platform shifts, and competitive moves can reshape the outlook quickly, so the details below are worth a careful read.
What follows is a clear walkthrough of the main facts and angles you need to make sense of the news.
May is double the fun for Full Moon and space fans because we’re getting two in one month. The first took place on May 1 and the second will be on May 31. This phenomenon is called a Blue Moon. And no, that doesn’t mean it’ll actually turn the color blue, it’s just a somewhat rare occurrence. You might say, “once in a blue moon”…
according to the data NASA, a Blue Moon is when a full moon shows up twice within the same calendar month. The lunar cycle (the process of the Moon orbiting the Earth) lasts about 29 and a half days, which is slightly shorter than most months. This means that every so often the timing lines up like it does in May, with a full moon right at the start of the month and another at the end. It’s not especially common, only happening roughly every couple of years. This is a monthly Blue Moon.
There are also seasonal Blue Moons. These occur when four full moons fall all within one season, instead of three which is what usually happens.
The Blue Moon in 2026 will occur on May 31. according to the data Time and Date, it will peak around 4:45 a.m. ET.
Blue Moons are fairly uncommon, as the saying goes. NASA says they occur roughly every two or three years.
Royal Museums Greenwich tells us that the next Blue Moon will be May 20, 2027. This will be a seasonal Blue Moon.
Lois Mackenzie is a freelance reporter at Mashable. Over the years she has written for many publications, covering everything from the local news to the best pair of running shoes. You can find bylines in publications including Fit&Well, Metro, and Coach magazine, usually covering deals on everything from earbuds to TVs, or guides on how to beat your half marathon time.
Lois also holds a Master’s degree in Digital Journalism from Strathclyde University and obtained a Master of Arts in English Literature at the University of Aberdeen.