alarm-clock.org/moon/eclipses

Total lunar eclipse — December 20, 2029

Coming up: every phase timed to the minute, the same instant worldwide, converted to your own clock — and whether the moon is up where you are.

Total lunar eclipse

December 20, 2029 · greatest eclipse 22:42 UTC

The moon passes entirely into the Earth's umbra — the dark core of the shadow — and turns a deep copper red.

Timeline

Every one of these instants is the same moment everywhere on Earth — the shadow falls on the moon, not on you. UTC is baked in; your own time zone appears underneath when the page loads.

Penumbral eclipse begins
the moon touches the soft outer shadow — hard to notice at first
19:44 UTC
Dec 20, 2029
Partial eclipse begins
the dark umbra reaches the edge of the disc
20:56 UTC
Dec 20, 2029
Totality begins
the moon is fully inside the umbra and turns red
22:15 UTC
Dec 20, 2029
Greatest eclipse
the moon is deepest in the shadow
22:42 UTC
Dec 20, 2029
Totality ends
the first bright edge returns
23:08 UTC
Dec 20, 2029
Partial eclipse ends
the umbra leaves the disc
00:27 UTC
Dec 21, 2029
Penumbral eclipse ends
the moon is clear of the shadow
01:39 UTC
Dec 21, 2029

Can you see it?

A lunar eclipse has no narrow path — everyone on the night side of the Earth sees the same thing at the same instant. At greatest eclipse the moon is directly overhead near 23°N, 20°E, so it is best placed over Europe, west Africa and the eastern Atlantic. Further from there, the moon sits lower; on the far side of the world it is below the horizon and the eclipse happens in daylight.

Worked out from the moon's altitude at your coordinates at greatest eclipse. Cloud is not included — nothing on this site knows the weather.

What to expect

Totality lasts 53 min, inside a partial phase of 3 h 31 min. The colour during totality varies from a bright orange to a dark brick red depending on how much dust and cloud is in the Earth's atmosphere at the time — it is not predictable in advance, which is part of the appeal.

No equipment and no eye protection are needed. Unlike a solar eclipse, a lunar eclipse is completely safe to watch with bare eyes.

More

Previous: Jun 26, 2029 · All lunar eclipses · Moon calendar · Moon phase today

Dates and circumstances are computed with the same method as the moon phases on this site — see how the moon phase is calculated.

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