Early adopter offer · Gloomia Pro $14.99 $9.99
← All posts

Partial Lunar Eclipse, August 28, 2026: The Almost-Blood Moon Two Weeks After the Eclipse

If you have already marked August 12 on your calendar for the total solar eclipse crossing Greenland, Iceland, and northern Spain, mark one more date next to it. On the night of August 27 into August 28, 2026, the full Moon slides deep into Earth's shadow for a partial lunar eclipse so deep that most of the disk will look about as red as a genuine blood moon, even though it technically never crosses into totality. It is not a coincidence that these two events sit two weeks apart. It is how eclipses work.

This is a different kind of event from the Perseid meteor shower that just wrapped up under a dark new moon, and different again from the total solar eclipse two weeks before it. A lunar eclipse needs no travel, no eclipse glasses, and no clear path of totality: if the sky is clear and the Moon is above your horizon during the window below, you can watch the whole thing with nothing but your own eyes.

Why a lunar eclipse always follows a solar eclipse

Solar and lunar eclipses come in pairs because of how the Moon's orbit is tilted relative to Earth's path around the Sun. Twice a year, during what astronomers call an eclipse season, the Moon's orbital plane lines up closely enough with Earth's shadow and the Sun that both a new moon and the nearest full moon can produce an eclipse. New moon lines up the Sun, Moon, and Earth for a solar eclipse; the full moon two weeks earlier or later lines up the Sun, Earth, and Moon the other way around, sending Earth's shadow across the lunar surface instead. August 12, 2026 was the new-moon half of this season. August 28 is the full-moon half.

That does not mean every eclipse season produces two dramatic events. Plenty of paired eclipses are minor penumbral grazes that barely register. This one is not a graze. Earth's shadow has two parts: a faint outer penumbra, and a much darker inner umbra. This eclipse pulls the Moon deep into that umbra, covering somewhere around 93 to 96 percent of its disk depending on which calculation you use, with only a thin bright edge left uneclipsed. It is about as close to a total lunar eclipse as it is possible to get without actually being one.

View Orrery
Orrery renders the solar system's actual current planet positions, a good way to picture the Sun-Earth-Moon alignment that causes an eclipse in the first place.

The verified times

Based on eclipse calculations from timeanddate.com and TheSkyLive, the full sequence runs like this in UTC:

  • Penumbral eclipse begins: 01:24 UTC
  • Partial eclipse begins (umbral shadow first touches the Moon): 02:34 UTC
  • Greatest eclipse (maximum coverage): 04:13 UTC
  • Partial eclipse ends: 05:52 UTC
  • Penumbral eclipse ends: 07:02 UTC

The obvious part, the stretch where the dark umbral bite is visibly eating into the Moon, runs from partial start to partial end, about 3 hours and 18 minutes. The full event including the much subtler penumbral shading on either side runs a little over five and a half hours, though the penumbral phase is faint enough that most casual observers will not notice anything until the umbra shows up.

Converted to local clock time, greatest eclipse at 04:13 UTC falls at roughly 12:13 a.m. EDT, 11:13 p.m. CDT, 10:13 p.m. MDT, and 9:13 p.m. PDT, all on the night of August 27. For the UK and Western Europe it lands in the early morning of August 28, around 5:13 a.m. BST or 6:13 a.m. CEST, close enough to dawn that the Moon will already be low. Always double-check a site like timeanddate.com for your exact location, since the visible window shifts by your local time zone and how high the Moon sits above your horizon.

Who actually gets a good view

Visibility splits fairly cleanly by hemisphere and clock. The Americas get the best seats: greatest eclipse happens in the evening or shortly after dark across most of North, Central, and South America, with the Moon reasonably high in the sky. Europe, Africa, and western Asia can also see it, but the timing works against them: the eclipse plays out in the pre-dawn hours, with the Moon sinking toward the western horizon as the Sun starts to come up, so the deepest part of the eclipse happens low in the sky and the tail end may be lost to moonset or brightening twilight depending on exactly where you are. Eastern Asia and Australia are on the wrong side of the planet entirely; for them, the Moon simply is not above the horizon during any part of this eclipse.

That regional split is close to the reverse of what happened at the last major lunar eclipse. Back on March 2 to 3, 2026, a total lunar eclipse swept a genuine deep red blood moon across the Pacific, western North America, eastern Asia, and Australia, but Europe and Africa saw nothing at all, since the Moon was below their horizon the entire time. This August event flips that: Europe and Africa finally get a look, even if a compromised one near moonset, while the Americas get the clean view this time around.

What it will actually look like

Do not expect the full copper-red blood moon of a true total eclipse. With the shadow covering somewhere in the 93 to 96 percent range rather than the full disk, one edge of the Moon should keep a noticeably brighter, more normal grey-white sliver right through greatest eclipse, while the rest of the disk dims and typically shifts toward a dark reddish, brownish, or coppery hue. The exact shade depends on how much dust and cloud is sitting in Earth's atmosphere at the time, since that atmosphere is what bends sunlight into the shadow and gives it that reddish tint in the first place, the same physics that makes sunsets orange. It is a strange, striking sight: almost, but not quite, a full blood moon, with that one bright crescent as a reminder of how close it came.

None of this needs a telescope. Lunar eclipses are entirely safe to look at directly with the naked eye, unlike a solar eclipse, so there is no glasses or filter to buy. Binoculars will sharpen the color and any texture on the shadowed portion, and a camera on a tripod with a longer exposure can pull out more red than your eyes alone will see, but the baseline experience just requires clear sky and a spot with an open view toward wherever the Moon sits for your time zone.

View Constellations
Constellations computes the real night sky for coordinates you enter, useful for locating exactly where the Moon will sit before you head outside.

Planning the night

Because this is a deep partial rather than a total eclipse, there is technically no single moment of full darkness to plan around the way you would for a total solar eclipse's brief totality. Instead, the most dramatic window is the roughly hour to ninety minutes bracketing greatest eclipse at 04:13 UTC, when the shadow is deepest and the color contrast between the dark limb and the bright sliver is most obvious. Getting outside 15 to 20 minutes before partial eclipse begins at 02:34 UTC lets your eyes adjust and gives you the satisfying moment of actually watching the shadow's edge creep across the disk, rather than just walking out to an already half-eclipsed Moon.

If you are somewhere with light pollution, a lunar eclipse is far more forgiving than trying to catch faint meteors or the Milky Way core, since the Moon itself is bright enough to spot from almost anywhere with a clear sky. City-center viewing is genuinely fine for this one, as long as tall buildings do not block your direction toward the Moon. If you also want to know when the Moon and the rest of the sky above you will look their darkest and clearest for other kinds of stargazing later this year, the 2026 meteor shower calendar and the aurora forecast for the September equinox both cover what is coming up next.

Where Gloomia fits into eclipse night

There is no eclipse-simulation wallpaper in Gloomia's catalog, and it would be misleading to pretend otherwise. What the app does have is a small set of wallpapers built on genuinely real astronomical data rather than a decorative animation loop, and two of them are useful in the lead-up to a night like this rather than during it. Orrery renders the solar system's actual current planet positions, which is a clean way to visualize the straight-line Sun, Earth, Moon alignment that makes any eclipse, solar or lunar, possible in the first place. Constellations computes the real night sky for whatever latitude and longitude you enter, calculated locally on your own machine with no internet connection required, which is a genuinely practical way to check where the Moon will actually sit relative to the horizon from your specific location before you commit to standing outside at midnight. The full rundown of how both are built is in the astronomy wallpapers deep dive.

Both of those wallpapers, like almost everything past the three free ones, need Gloomia Pro to unlock: a one-time $9.99 purchase that opens the whole catalog for good, or $2.99 a year if you would rather commit less up front, with a license that activates on up to three devices and needs no account at any tier. If you just want to try Gloomia itself first, Starfield, Planet System, and Hue Drift are free forever with nothing to sign up for.

Frequently asked questions

When exactly is the August 2026 lunar eclipse?

The partial phase runs from about 02:34 UTC to 05:52 UTC on August 28, 2026, with greatest eclipse at roughly 04:13 UTC. In North America that lands in the evening and overnight hours of August 27, around 12:13 a.m. EDT, 11:13 p.m. CDT, 10:13 p.m. MDT, and 9:13 p.m. PDT. In the UK and Western Europe it falls in the early morning of August 28, close to 5:13 a.m. BST.

Will this lunar eclipse be visible where I live?

It is visible across the Americas, Europe, Africa, western Asia, and the Pacific, Atlantic, and Indian Ocean regions, weather permitting. The Americas get the best view with the Moon high in the sky during the evening; Europe and Africa see it low near moonset before dawn. Eastern Asia and Australia are on the daylight side of Earth and will miss it entirely.

Is this a total lunar eclipse or a partial one?

It is a deep partial eclipse, not total. Earth's dark umbral shadow covers roughly 93 to 96 percent of the Moon's disk at maximum, depending on how the figure is calculated, so a thin bright sliver stays outside the shadow. Most of the disk should still take on a dim reddish or coppery color, close to what a full blood moon looks like, without ever fully crossing into totality.

Do I need a telescope to see the eclipse?

No. Lunar eclipses are naked-eye events and perfectly safe to look at directly, unlike a solar eclipse. Binoculars will sharpen the reddish color and any surface detail, and a camera on a tripod can capture it, but no special equipment is required.

How does this eclipse relate to the August 12 total solar eclipse?

They belong to the same eclipse season. A solar eclipse and a lunar eclipse always arrive roughly two weeks apart, one at new moon and one at the following or preceding full moon, whenever the Moon's orbital plane lines up with Earth's shadow closely enough. The August 12 total solar eclipse over Greenland, Iceland, and Spain and this August 28 partial lunar eclipse are the paired new-moon and full-moon events of the same season.

Does Gloomia have a wallpaper built specifically for this eclipse?

No, there is no eclipse-specific wallpaper. Constellations computes the real night sky for coordinates you enter, which is useful for finding exactly where the Moon will sit that night, and Orrery shows the solar system's actual current planet positions, which is a good way to see the Sun-Earth-Moon alignment that causes any eclipse. Both are separate from an eclipse simulation.

Bring your desktop to life

Three wallpapers free forever. Windows, macOS & Linux.

Get Gloomia