A 96 percent lunar eclipse happens early Friday

At 04:12 UTC on Friday morning, 96.3% of the Moon will be sitting inside Earth's shadow. Not 100%. That remaining sliver is the reason this partial lunar eclipse is worth an alarm.

The event is covered by the Royal Observatory Greenwich and timeanddate.com, and both agree on the timings below. Here is what happens, who gets to see it, what you need, and what to look for as the shadow moves across the disk.

When does the partial lunar eclipse start and end?

The whole event, faint outer shadow included, runs from 01:23 to 07:01 UTC, about five and a half hours. The part you can actually see with your eyes is the partial phase. It begins at 02:33 UTC, reaches maximum at 04:12, and ends at 05:52.

For the UK, the Royal Observatory Greenwich puts the start of the visible phase at 3:33am BST with maximum at 5:12am, and roughly 93% of the visible disk buried in the darkest part of the shadow. The 96.3% figure and the 93% figure describe the same moment measured two ways, so do not worry if you see both quoted.

The UK column is simply UTC plus one hour, and only the 3:33am and 5:12am entries are quoted directly by the Royal Observatory. The others follow from the UTC times.

Where can you see it?

The Americas get the best of it. Central and eastern parts of the United States, eastern Canada, Central America and South America see the entire event from start to finish.

Europe and Africa catch it close to moonset, so a low western horizon and clear sky matter more than usual there. If you are in the UK, find a spot with an open view to the west before you go out, because the Moon will be sinking towards the horizon as the eclipse deepens. Across most of Asia the Moon is below the horizon while it happens, so that region misses it entirely.

What is actually happening to the Moon?

A lunar eclipse happens when the Sun, Earth and Moon line up and the Moon passes through Earth's shadow. That shadow has two parts. The penumbra is the faint outer region, where Earth blocks only some of the sunlight. The umbra is the dark core, where Earth blocks the Sun's disk completely.

The 01:23 UTC start marks the Moon entering the penumbra, which is so subtle that most people cannot spot it. The eye-catching part starts at 02:33 UTC, when the Moon first touches the umbra and a dark bite appears on its edge. At 04:12 UTC the bite is at its biggest, with 96.3% of the disk covered.

The shadowed part does not go black. Sunlight bends through Earth's atmosphere and the bluer light is scattered away, leaving a dim red glow that falls on the Moon. It is the same effect that makes a sunset red, and it is why eclipsed moons are often called blood moons.

Why can 96% look better than 100?

In a total lunar eclipse the whole disk turns the same rusty red, which is beautiful and slightly flat. In a deep partial you get a gradient instead: heavy red at the buried edge, running out to a bright sliver still catching direct sunlight.

The contrast between the two makes the colour far more obvious to the naked eye, because your vision reads the difference rather than the absolute shade. A fully red Moon has nothing to be compared against. A Moon that is almost covered, with one thin bright edge, gives your eye a reference point and the red looks richer for it.

What should you look for during the partial phase?

Watch the edge of the shadow rather than the middle of it. The umbra's curved outline is a direct view of Earth's own shadow, and it is noticeably larger than the Moon itself, which is why a deep partial eclipse can swallow so much of the disk. As the minutes pass the dark bite grows steadily from 02:33 UTC, so you can check in every so often and see clear progress.

Around maximum, scan the Moon for the colour gradient described above. The edge nearest the centre of the shadow should look deepest, while the opposite limb stays bright. Photographers should note that the bright sliver will overexpose long before the red part is visible, so bracketing several exposures is the easiest way to capture both.

What equipment do you need?

Nothing. A lunar eclipse is safe to look at directly, unlike the total solar eclipse on 12 August that opened this eclipse season and needed certified filters. No glasses, no filters, no telescope required. If you missed or want to revisit that event, our guides to the total solar eclipse on 12 August 2026 and the first total eclipse for mainland Europe since 1999 cover how it went and why filters mattered.

Binoculars do help, though, mostly with the colour. A cheap pair like the Celestron Cometron 7x50 gathers enough light to pull the red out of the shadowed portion that the naked eye reads as grey. The "50" in 7x50 is the width of each front lens in mm, and a wide lens collects more light, which is what brings out the faint colour.

Let your eyes adjust for ten minutes first and the difference is larger than the optics alone would suggest. Keep phone screens dim or away during that time, since a bright screen resets your night vision.

What comes after the eclipse?

Friday closes an eclipse season that opened a fortnight ago, so there is no second eclipse to plan around this time. If you want something further out to look forward to, the Roman Space Telescope launches on 30 August, two days later.

Our explainer on what the Nancy Grace Roman Space Telescope is built to do sets out how it differs from Webb, and a separate piece covers the first images from its 300 megapixel camera, as NASA describes it. For a slightly closer target, see our guide to the Orionid meteor shower, which peaks later in October with a bright Moon in the way.

For this eclipse, the plan is simple. Check your local times against the table, find a clear western view if you are in Europe or Africa, give your eyes ten minutes to adjust, and look up. The deepest point arrives at 04:12 UTC, and it is over by 05:52 UTC.

Key takeaways

• The partial phase runs 02:33 to 05:52 UTC on 28 August, deepest at 04:12 UTC, within a full event that lasts from 01:23 to 07:01 UTC.
• At maximum, 96.3% of the Moon sits inside Earth's umbra, just short of total, and the Royal Observatory Greenwich puts the UK figure at roughly 93% of the visible disk.
• The Americas get the full event, Europe and Africa see it close to moonset, and Asia misses it entirely.
• A deep partial eclipse can show more colour than a total one because the red edge contrasts with the bright sliver, and binoculars such as the Celestron Cometron 7x50 help bring it out.
• No filters or glasses are needed, and the Roman Space Telescope launches two days later, on 30 August.