The unusual astronomical occurrence known as a “Black Moon” will reach its peak early August 23, around 12 am ET in the Western Hemisphere. Observers in other parts of the world will experience it on August 24. The event has reignited speculation about biblical prophecy and the "end of "times," but what’s really going on?
A Black Moon happens when a second new moon appears within a single calendar month. Unlike a full moon, a new moon passes between Earth and the Sun, leaving the side facing our planet in shadow—completely invisible to the naked eye.
Seasonal Black Moons occur roughly once every 33 months, with the next one predicted for August 20, 2028. Because the lunar cycle is slightly shorter than the average month, it occasionally allows for two new moons to fall within the same month.
While there’s nothing spectacular to see in the sky during a Black Moon, the absence of moonlight offers a silver lining for skywatchers: darker nights make stars and planets far easier to observe.
Not all celestial events are visible to the naked eye or occur globally, but we’re lucky to witness a variety of cosmic phenomena each year. This weekend’s Black Moon is just one of many.
In this gallery, we’ve rounded up the most fascinating and unique celestial events set to unfold over the next 50 years. Click through and save the dates!