There’s news from the night sky: on the night of August 27–28, 2026, a lunar eclipse will sweep across much of the world.
Earth’s shadow will cover nearly 93% of the Moon’s diameter—enough for a large portion of the lunar surface to take on a deep copper hue without crossing into totality.
Visible from the Americas, Europe, Africa, and much of western Asia, the eclipse will also bring to a close an astronomical pattern more than a century in the making: it is the last in a series of partial eclipses, which from 2044 onward will give way to total ones.
An Eclipse That Stops Just Short of Totality
Lunar eclipses occur when Earth passes between the Sun and the Moon, casting its shadow across the lunar surface during a full moon.
That shadow has two distinct regions: the penumbra, a diffuse outer zone, and the umbra, the darker, more concentrated core.
When the Moon passes entirely through the umbra, the eclipse is total. When only a portion enters that shadow—as will happen this time—it is classified as partial.
With a magnitude of approximately 0.93, this eclipse sits at the very edge of what still counts as partial: nearly the entire visible surface of the Moon will lie within Earth’s shadow, with only a thin sliver still catching direct sunlight.
The eclipsed portion doesn’t disappear. Instead, it takes on shades ranging from brick red to burnished copper—a consequence of Rayleigh scattering, the same physical process that turns sunsets orange. Earth’s atmosphere filters sunlight and bends only the longest, reddest wavelengths around its own horizon and onto the lunar surface.
The End of a Chapter Within Its Own Cycle
Eclipses do not happen at random. They cluster into families known as Saros cycles, each made up of dozens of eclipses separated by just over 18 years and repeating with nearly identical geometry.
The eclipse of August 27 and 28, 2026, belongs to Saros 138, a cycle that began in 1521 with a barely perceptible penumbral eclipse and has grown steadily more intense with each passing event over the centuries.
What makes this moment remarkable is where the series now stands.
Since 1918, every eclipse in Saros 138 has been partial, each one cutting slightly deeper than the last. The 2026 eclipse is the final one in that sequence.
The next member of Saros 138, arriving in 2044, will be a total eclipse—and the series will continue producing total eclipses for several centuries to come.
Put simply: anyone who looks up at the Moon on the night of August 27, 2026, will be witnessing the close of a chapter nearly 110 years long within a cycle that is only now reaching its peak.
Timing by Region
Unlike solar eclipses, which trace a narrow corridor across Earth’s surface, lunar eclipses are visible across entire hemispheres—wherever the Moon is above the horizon during the event.
The maximum phase will occur at approximately 10:12 p.m. in Mexico City, 11:14 p.m. in Bogota and Lima, and 1:14 a.m. on August 28 in Buenos Aires.
In Spain and across Europe, the Moon will hang very low in the west, near moonset, when the eclipse peaks at around 6:12 a.m., making it essential to find an unobstructed view toward the west.
South America is, overall, one of the best-placed regions to watch the whole event from start to finish, while in the western United States and Canada the Moon will rise with the eclipse already underway, meaning the opening phases will not be visible there.
How to Watch It
Unlike a solar eclipse, this one poses no risk to your eyes and can be watched without any filters or protective gear.
In practical terms, all you need is a clear sky and a horizon free of buildings or tall trees.
Moving away from areas with heavy light pollution will sharpen the color contrast in the eclipsed portion, and a simple pair of binoculars will reveal the Moon’s craters and surface features in far more detail throughout the event.
Why “Blood Moon” Isn’t Quite the Right Term
The label “blood moon” is often applied loosely to any lunar eclipse that produces reddish tones, but strictly speaking, it applies only to total eclipses—those in which the entire lunar surface is engulfed by the umbra and takes on that color uniformly.
Because the August 2026 eclipse is partial, a portion of the Moon will continue receiving direct sunlight at maximum phase, meaning the reddening will appear only in the shadowed zone, not across the full disk.
The next opportunity to see a true blood moon—with the entire Moon turned red—will not come until December 31, 2028.
This eclipse isn’t happening on its own. Sixteen days earlier, on August 12, 2026, a total solar eclipse will cross northern Spain and other parts of the North Atlantic.
That proximity is no coincidence. It’s a predictable feature of what astronomers call eclipse seasons: windows of roughly one month during which the orbital alignment of Earth, the Sun, and the Moon makes it possible for a solar and a lunar eclipse to occur in close succession.
With this event, the 2026 lunar eclipse calendar comes to an end. The next one won’t come until 2027.
