Total lunar eclipse — Asia (2025)
An 82-minute totality seen across Asia — from Korea and India the whole blood-moon sequence played out in the evening sky.
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The moment of Total lunar eclipse — Asia (2025): https://nowsky.org/e/lunar-eclipse-2025 — opens at the right place and time, replayable, no login.
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The story
On the night of 7 September 2025 (UT) the Moon spent 82 minutes deep in Earth's umbra, turning a dark copper red. Totality ran from 17:30 to 18:52 UT with maximum at 18:11 — visible from Asia, Africa, Europe and Western Australia, and one of the longer totalities of recent years.
For Korea that meant the small hours of 8 September. With the Moon in the south-western sky, the partial phase began at 01:27, totality lasted from 02:30 to 03:52, and the partial ended at 04:56 — the first total lunar eclipse fully observable from Korea since November 2022. From Delhi the red Moon hung high in the south around 11 p.m.
A totally eclipsed Moon is red because of every sunset on Earth at once: sunlight refracted through the atmosphere bends into the shadow, and only the long red wavelengths get through to light the Moon. Seen from the Moon, Earth's rim would blaze as a ring of red. This time the Moon passed near the centre of the shadow, so the colour was especially dark and deep.
Unlike a solar eclipse, a lunar eclipse looks the same from everywhere the Moon is up and is safe to watch with the naked eye. The sky replay tracks the Moon over Delhi from 90 minutes before maximum; switch the location to Seoul for the red Moon in the pre-dawn south-west. Korea's next total lunar eclipse is the New Year blood moon of 31 December 2028.
Why it matters
A total lunar eclipse filters all of Earth's atmosphere at once. The Moon's colour and brightness (the Danjon scale) reflect how much volcanic ash, dust and cloud the air holds at the time; eclipses after large eruptions are markedly darker. The deep copper of September 2025 came from a central passage through the shadow rather than a dirty atmosphere.
The Moon's surface also cools by more than 100 degrees within hours, which is science in itself: thermal cameras on lunar orbiters use the cooling rate during an eclipse to map rock and regolith.
Watched simultaneously across Asia, Europe and Africa, it also became a citizen-science sample — thousands of photographs of the Moon's colour at the same instant, combined to reconstruct the brightness profile of the shadow.
How to watch
Totality 17:30–18:52 UT. Seoul 02:30–03:52 on 8 September (partial 01:27–04:56), Delhi 23:00–00:22, Sydney 03:30–04:52, London and Paris caught the later part of totality at moonrise; the Americas missed it.
A lunar eclipse is safe to watch unaided, and binoculars bring out the colour gradient at the shadow's edge. Photographs need exposures of one to four seconds during totality; a tripod and a long lens keep surface detail. City lights do not matter — an apartment window facing the Moon is enough.
The sky replay tracks the Moon over Delhi and slows as it enters the shadow; set the location to Seoul for the altitude and timing in the pre-dawn south-west, or to Sydney for the western pre-dawn sky.
See this for yourself — open that sky at that moment · replay the moment in the orbit view
Background
The eclipse belongs to Saros 128; its predecessor was 28 August 2007 over the Pacific and the Americas, its successor is 19 September 2043. 2025 was a two-blood-moon year, paired with the total eclipse of 14 March over the Americas.
Total lunar eclipses fully visible from Korea come irregularly — 8 November 2022, the pre-dawn of 8 September 2025, next the night of 31 December 2028, then 25 April 2032.
Two weeks later, on 21 September, a partial solar eclipse followed over the South Pacific and Antarctica — lunar and solar eclipses pairing a fortnight apart is a rule set by the geometry of the lunar month.
The eclipse of 7 September 2025 reached maximum at 18:12 UT and was visible from Asia, Australia, Europe and Africa; from Korea the whole of totality was seen around 11:30 pm with the Moon high in the southern sky. The 82 minutes of totality followed from the Moon passing close to the centre of Earth’s shadow. A total lunar eclipse on 14 March the same year, visible from the Americas, made 2025 a year of two, and the partner solar eclipse of the September event was the partial eclipse over the South Pacific and New Zealand on 21 September, two weeks later.
FAQ
What time was it visible from Korea?
Totality from 02:30 to 03:52 on 8 September, with the partial phases from 01:27 to 04:56, in the south-western sky.
Why does the Moon turn red?
Only the red part of sunlight refracted through Earth's atmosphere reaches into the shadow to light the Moon — every sunset on Earth at once.
Is it safe to watch with the naked eye?
Yes — a lunar eclipse is safe for the naked eye, binoculars and telescopes at every stage.
When is Korea's next total lunar eclipse?
The night of 31 December 2028, then 25 April 2032.
Related
- The 2028 New Year blood moon
- The 2026 total lunar eclipse over the Pacific
- The 2032 total lunar eclipse from Seoul
- The Moon — object index
- Earth — object index
Times and figures are approximate — verify with official sources when planning travel. Simulation uses J2000 mean elements.