August 2026 lunar eclipse

A partial lunar eclipse will take place on August 28, 2026. The moon will be almost be inside the umbra, but not quite be contained within the umbral shadow at greatest eclipse.

Partial Lunar Eclipse
August 28, 2026

The moon passes west to east (right to left) across the Earth's umbral shadow, shown in hourly intervals.
Series138 (30 of 83)
Duration (hr:mn:sc)
Partial3:18:07
Penumbral5:37:46
Contacts
P11:23:55 UTC
U12:33;48
Greatest4:12:49
U45:51:55
P47:01:41

This lunar eclipse follows the total solar eclipse of 12 August 2026.

Visibility

It will be completely visible over South and eastern North America, will be seen rising over the rest of North America, and setting over Africa and Europe.

Lunar year series

Saros series

Lunar saros series 138 has 26 total eclipses between September 7, 2044 and March 24, 2369. The longest eclipse will be on January 7, 2243, and last for 102 minutes.

Partial eclipses will occur between June 24, 1918 and August 13, 2603. Penumbral eclipses will occur between October 15, 1521 and March 30, 2982. [1]

Metonic series

The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the earth's shadow will be in nearly the same location relative to the background stars.

  1. 1988 Mar 03.675 – Partial (113)
  2. 2007 Mar 03.972 – Total (123)
  3. 2026 Mar 03.481 – Total (133)
  4. 2045 Mar 03.320 – Penumbral (143)
  1. 1988 Aug 27.461 – partial (118)
  2. 2007 Aug 28.442 – total (128)
  3. 2026 Aug 28.175 – partial (138)
  4. 2045 Aug 27.578 – penumbral (148)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[2] This lunar eclipse is related to two total solar eclipses of Solar Saros 145.

August 21, 2017 September 2, 2035
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See also

Notes
  1. Hermit Eclipse: Eclipse Saros 138
  2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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