✨ Caelus • Lunar Eclipse on April 4, 1977

September 09, 2026 17:10:09 UTC+02:00 [48.85° N, 2.35° E]

‹ All eclipses in 1977

Partial Lunar Eclipse

April 4, 1977

Umbra Penumbra Moon

Greatest Eclipse

06:18

04:18 UTC

Duration

4h 22m

first to last penumbral contact

Deepest Phase

1h 34m

Partial phase

Umbral Magnitude

0.193

of the diameter in the umbra

Penumbral Magnitude

1.165

of the diameter in the penumbra

Gamma

-0.915

5 835 km south of the axis

🕐 Contacts

Times in Europe/Paris, with UTC underneath.

First penumbral contact (P1)

The Moon touches Earth's penumbra and starts to dim.

04:06

02:06 UTC

PA 71.0°

26.3° alt · 220° az
First umbral contact (U1)

The Moon reaches the umbra and the partial eclipse begins.

05:30

03:30 UTC

PA 43.4°

16.0° alt · 238° az
Greatest eclipse

The Moon's centre is least distant from the axis of Earth's shadow.

06:18

04:18 UTC

PA 197.2°

9.1° alt · 248° az
Fourth umbral contact (U4)

The Moon leaves the umbra and the partial eclipse ends.

07:05

05:05 UTC

PA 350.9°

1.9° alt · 256° az
Last penumbral contact (P4)

The Moon leaves Earth's penumbra and the eclipse ends.

08:29

06:29 UTC

PA 323.3°

-11.5° alt · 272° az

The position angle is measured on the Moon's limb from celestial north through east, the convention IMCCE and NASA publish, so these values can be compared with a published table directly.

👁 Visibility

From your location.

The Moon sets while the eclipse is still under way.

Penumbral phase: Partly visible
Partial phase: Entirely visible

Moon sets: 07:23 05:23 UTC

Moon above the horizon: 04:06 – 07:23

A lunar eclipse happens at the same moment everywhere. All that changes from place to place is whether the Moon is above the horizon.

⏳ Durations

Penumbral phase 4h 22m

Partial phase 1h 34m

🌍 About This Eclipse

A partial lunar eclipse occurs when the Earth passes between the Sun and the Moon, but they are not perfectly aligned. This causes only a portion of the Moon to be covered by the Earth's shadow, resulting in a partial darkening of the Moon's surface.

A lunar eclipse is a geocentric event. The contacts and magnitudes on this page are the same for every observer who can see the Moon at that moment.