Penumbral Lunar Eclipse 17 August 2027
The moon will perceptibly dim as it passes through the Earth's northern penumbral shadow
Series (and member)	148 (4 of 71)
Gamma	1.2797
Magnitude	0.5456
Duration (hr:mn:sc)
Penumbral	3:38:35
Contacts
P1	5:24:29 UTC
Greatest	7:13:43
P4	9:03:03

A penumbral lunar eclipse will take place on Tuesday, August 17, 2027. It will cause a subtle dimming as 54.56% of the Moon will cross within Earth's penumbral shadow.

Visibility

It will be completely visible over the Americas, will be seen rising over New Zealand and eastern Australia, and setting over Portugal and western Africa.

Related eclipses

Eclipses in 2027

An annular solar eclipse on 6 February.
A penumbral lunar eclipse on 20 February.
A penumbral lunar eclipse on 18 July.
A total solar eclipse on 2 August.
A penumbral lunar eclipse on 17 August.

Lunar year series

Lunar eclipse series sets from 2024–2027
Descending node				Ascending node
Saros	Date	Type Viewing	Gamma	Saros	Date Viewing	Type Chart	Gamma
113	2024 Mar 25	Penumbral	1.06098	118	2024 Sep 18	Partial	−0.97920
123	2025 Mar 14	Total	0.34846	128	2025 Sep 07	Total	−0.27521
133	2026 Mar 03	Total	−0.37651	138	2026 Aug 28	Partial	0.49644
143	2027 Feb 20	Penumbral	−1.04803	148	2027 Aug 17	Penumbral	1.27974

Last set	2023 May 05			Last set	2023 Oct 28

Next set	2028 Jan 12			Next set	2027 Jul 18

Saros series

It is part of Saros cycle 148.

Metonic cycle (19 years)

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 in nearly the same location relative to the background stars.

Metonic lunar eclipse sets 1951–2027
Descending node			Ascending node
Saros	Date	Type	Saros	Date	Type
103	1951 Feb 21.88	Penumbral	108	1951 Aug 17.13	Penumbral

113	1970 Feb 21.35	Partial	118	1970 Aug 17.14	Partial

123	1989 Feb 20.64	Total	128	1989 Aug 17.13	Total

133	2008 Feb 21.14	Total	138	2008 Aug 16.88	Partial

143	2027 Feb 20.96	Penumbral	148	2027 Aug 17.30	Penumbral

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[1] This lunar eclipse is related to two partial solar eclipses of Solar Saros 155.