Partial Lunar Eclipse — October 28-29, 2023

Partial Lunar Eclipse - 10.28.2023

Partial Lunar Eclipse - 10.28.2023The Hunter’s full moon brings a fun event today during the night (18:01–22:26 UTC/GMT or 2:01 p.m.–6:26 p.m. ET) for those in Europe, Africa, most of Asia, and western Australia.

🌞🌍🌕 Earth casts a shadow on the Moon – A lunar eclipse.

This is a partial lunar eclipse. For this one, only a small part of the Moon will enter Earth’s umbral shadow, the dark part. For most of the time, the eclipse will be a penumbral eclipse where only the outer shadow (the penumbra) hits the Moon. This means that there will be a little bit of darkening of the moon from Earth’s penumbral shadow but most will be a very faint change on an edge of the Moon from Earth’s penumbral shadow.

So this is not a ton of action. But maybe some will feel it? 🤔⁉️😎

October 28, 2023 Partial Lunar Eclipse Visibility Map. CREDIT: Dominic Ford,

October 28, 2023 Partial Lunar Eclipse Visibility Map. CREDIT: Fred Espenak

During a lunar eclipse, Earth gets in the way of the sun’s light hitting the moon. That means that during the night, a full moon fades away as Earth’s shadow covers it up.

Lunar Eclipse Diagram

Credit: Rice Space Institute

A Penumbral Lunar Eclipse occurs when the Moon passes through Earth’s penumbra. The penumbra causes a subtle dimming of the lunar surface, which is only visible to the naked eye when about 70% of the Moon’s diameter has been immersed into Earth’s penumbra.  

A special type of penumbral eclipse is a total penumbral lunar eclipse, during which the Moon lies exclusively within Earth’s penumbra. Total penumbral eclipses are rare, and when these occur, the portion of the Moon closest to the umbra may appear slightly darker than the rest of the lunar disk.

The October 28, 2023 eclipse is a “partial lunar eclipse” because only a small part of the Moon enters Earth’s darker umbral shadow.

Find Out More About Lunar Eclipses

Livestreams for the October 28, 2023 partial lunar eclipse livestream

The Virtual Telescope Project

Eclipse Season

This is the second eclipse of the October eclipse season for 2023. Every year we get a collection of 4 to 7 eclipses somewhere on Earth, either lunar, solar, partial, or total. The first eclipse was the October 14, 2023 annular solar eclipse.

These eclipses come in seasons, a 35-day period with typically two eclipses, sometimes three. There are usually two seasons per year. This is the first of two seasons for 2023.

Enjoy, and there will be more to come!

For the second eclipse season, we have an annular solar eclipse on October 14, 2023, and this partial lunar eclipse on October 28-29, 2023.

The first eclipse season for 2023 was the April/May period beginning with the April 20, 2023 hybrid solar eclipse and ending with the May 5, 2023 deep penumbral lunar eclipse.