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Saturday, August 18, 2035

Partial Lunar Eclipse

3446days
05hrs
26min
53sec

Eclipse overview

The Partial lunar eclipse on August 18, 2035 includes interactive UTC and local timeline data, city visibility details, and map-based viewing tools. The overall eclipse duration is about 4h 51m. Coverage currently includes visibility guidance for 33 cities. Lunar eclipses are visible from the night side of Earth, where the Moon is above the horizon during eclipse phases.

Visibility regions: Lunar eclipses are visible from the night side of Earth, where the Moon is above the horizon during eclipse phases.

Last updated: 2026-03-12

Type
Partial lunar
Peak (UTC)
01:10
Obscuration
5%
Umbral Magnitude
0.120
Penumbral Magnitude
1.188
Overall Duration
4h 51m
Partial Phases
1h 19m
Penumbral Phases
3h 32m
Visible Cities
33

During a partial lunar eclipse, only a portion of the Moon enters Earth's dark shadow (umbra), creating a visible bite-shaped darkening on the lunar surface.

Eclipse Timeline

StageUTC
Penumbral Eclipse begins
10:45:36 PM UTC
Aug 18
03:45:36 PM
Aug 18
Partial Eclipse begins
12:31:41 AM UTC
Aug 19
05:31:41 PM
Aug 18
Maximum Eclipse
01:10:55 AM UTC
Aug 19
06:10:55 PM
Aug 18
Partial Eclipse ends
01:50:09 AM UTC
Aug 19
06:50:09 PM
Aug 18
Penumbral Eclipse ends
03:36:15 AM UTC
Aug 19
08:36:15 PM
Aug 18

Quick Facts

Obscuration5%
Umbral Magnitude0.120
Penumbral Magnitude1.188
Overall Duration4h 51m
Duration of Partial Phases1h 19m
Duration of Penumbral Phases3h 32m
Penumbral Semi-duration2h 25m

An Eclipse Never Comes Alone

A solar eclipse always occurs about two weeks before or after a lunar eclipse.

FAQ

When is the partial lunar eclipse in UTC?

Maximum eclipse occurs at 01:10:55 UTC.

How can I check eclipse time in my local timezone?

Use the timeline and city visibility tables on this page to compare UTC and local eclipse times for your timezone and major cities.

Where is this eclipse visible?

Lunar eclipses are visible from the night side of Earth, where the Moon is above the horizon during eclipse phases.

How long does this eclipse last?

The overall eclipse duration is about 4h 51m.

What affects eclipse viewing quality?

Cloud cover, local horizon obstructions, and Moon altitude can all affect what you see. Higher Moon altitude generally improves viewing conditions for lunar eclipses.

Why is a city labeled "partial" even with very high obscuration?

Eclipse classifications in astronomy are strict: a "total" lunar eclipse means Earth's umbral shadow fully covers the Moon, while "partial" means it doesn't. The same principle applies to solar eclipses where "partial" means the Moon doesn't completely cover the Sun — even at 99.9% coverage.

What's the difference between a solar and a lunar eclipse?

In a solar eclipse, the Moon passes between the Sun and Earth, casting a small, fast-moving shadow on Earth's surface. Only people inside that narrow shadow see the eclipse, which is why solar eclipses have a "path of totality." In a lunar eclipse, Earth passes between the Sun and the Moon, casting Earth's much larger shadow onto the Moon. Because the Moon is visible to everyone on the nightside of Earth at once, there's no moving shadow across the ground — everyone in the right hemisphere sees the same eclipse at the same time.

Why is there no shadow path on a lunar eclipse map?

Unlike a solar eclipse, a lunar eclipse doesn't produce a shadow racing across Earth's surface. Instead, Earth's shadow falls on the Moon, and everyone on the nightside of Earth sees the same event simultaneously. The dashed line on the map shows where the Moon is directly overhead during the eclipse — locations along this line have the Moon highest in the sky, giving the best viewing conditions.

What does "penumbral" mean?

The penumbra is the outer, lighter part of a shadow where the light source is only partially blocked. During a penumbral lunar eclipse, the Moon passes through Earth's penumbra — the Sun is partially obscured by Earth, causing a subtle dimming of the Moon rather than the dramatic red coloring seen in a total lunar eclipse. Penumbral eclipses are often difficult to notice with the naked eye. The word comes from the Latin "paene" (almost) and "umbra" (shadow) — literally "almost shadow."

What does "umbra" mean?

The umbra is the darkest, central part of a shadow where the light source is completely blocked. During a total lunar eclipse, the Moon passes fully into Earth's umbra, causing the dramatic blood-red coloring as the only light reaching the Moon is bent and filtered through Earth's atmosphere. During a solar eclipse, the Moon's umbra is the small, dark core of its shadow — the narrow path on Earth where the Sun is completely covered. The word comes from the Latin for "shadow."

What does "totality" mean?

Totality is the phase of an eclipse where the covering body completely blocks the light source. In a total solar eclipse, totality is the awe-inspiring window — typically 1–7 minutes — when the Moon fully covers the Sun, revealing the solar corona, making stars visible in daytime, and causing a 360° sunset along the horizon. In a total lunar eclipse, totality is when the Moon is fully inside Earth's umbra and turns red or orange. Only locations directly within the path of totality (solar) or on the nightside of Earth (lunar) experience this phase.

What does "magnitude" mean for an eclipse?

Eclipse magnitude measures how much of the eclipsed body's diameter is covered at maximum eclipse. A magnitude of 1.0 means the covering body exactly matches the eclipsed body's apparent size. For solar eclipses, a magnitude greater than 1.0 produces totality; less than 1.0 produces a partial or annular eclipse. For lunar eclipses, magnitude measures how deeply the Moon enters Earth's shadow — above 1.0 means the Moon is fully inside the umbra (total eclipse). Magnitude is a dimensionless ratio of diameters, not area, so it's different from obscuration.

What does "obscuration" mean?

Obscuration is the fraction of the Sun's (or Moon's) area that is covered at any given moment, expressed as a percentage. Unlike magnitude (which measures diameter), obscuration measures the actual covered area. At 50% obscuration, half of the Sun's disk is blocked by the Moon. At 100%, the Sun is completely covered — but this only happens during totality in a total solar eclipse. In the City Visibility table, obscuration shows the maximum coverage that location will experience.

Eclipse Visibility Map

00:00 — 23:59 UTC
01:10 UTC06:10 PM UTC-7Eclipse
Visibility zones:
Entire eclipseAll partialSome partialPenumbral only
Moon high (>30°) Medium (10-30°) Low (<10°)||
How to read
Scrubber: moves eclipse in time
Darker band = stronger eclipse
Dashed line: Moon overhead track
Moon at peak eclipse
Range: 22:45 to 03:36 UTC
Peak: 01:10 UTC
|Click anywhere to check visibility

3D Globe View

Drag to rotate · Scroll to zoom
MoonEntire eclipseAll partialSome partialPenumbral only
How to read
Moon
Scrubber: moves eclipse in time
Darker band = stronger eclipse
Range: 22:45 to 03:36 UTC
Peak: 01:10 UTC
00:00 — 23:59 UTC
01:10 UTC06:10 PM UTC-7Eclipse

City Visibility

33 cities
CityTypeMoon Alt°Start (local)Maximum (local)End (local)
Kinshasapartial56.6° (Excellent)23:4502:1004:36
Istanbulpartial21.3° (Good)01:4504:1006:36
Lagospartial62.1° (Excellent)23:4502:1004:36
Mumbaipartial-4.1° (Below horizon)04:1506:4009:06
Sao Paulopartial59.1° (Excellent)19:4522:1000:36
Mexico Citypartial2.6° (Low)16:4519:1021:36
Karachipartial-0.1° (Below horizon)03:4506:1008:36
Delhipartial-9.7° (Below horizon)04:1506:4009:06
Moscowpartial7.6° (Low)01:4504:1006:36
Dhakapartial-21° (Below horizon)04:4507:1009:36
Cairopartial26.5° (Good)01:4504:1006:36
Johannesburgpartial44.8° (Excellent)00:4503:1005:36
Londonpartial24° (Good)23:4502:1004:36
New Yorkpartial14.7° (Good)18:4521:1023:36
Jakartapartial-31.6° (Below horizon)05:4508:1010:36
Limapartial30.7° (Excellent)17:4520:1022:36
Bogotapartial30.1° (Excellent)17:4520:1022:36
Rio De Janeiropartial62.4° (Excellent)19:4522:1000:36
Singaporepartial-30.8° (Below horizon)06:4509:1011:36
Bangkokpartial-29.6° (Below horizon)05:4508:1010:36
Santiagopartial36° (Excellent)18:4521:1023:36
Cape Townpartial50.5° (Excellent)00:4503:1005:36
Los Angelespartial-16.3° (Below horizon)15:4518:1020:36
Dubaipartial9.6° (Low)02:4505:1007:36
Berlinpartial19.5° (Good)00:4503:1005:36
Madridpartial35.4° (Excellent)00:4503:1005:36
Buenos Airespartial45.6° (Excellent)19:4522:1000:36
Torontopartial9.8° (Low)18:4521:1023:36
Chicagopartial5.1° (Low)17:4520:1022:36
Romepartial28.9° (Good)00:4503:1005:36
Havanapartial16.2° (Good)18:4521:1023:36
Parispartial26° (Good)00:4503:1005:36
Kuala Lumpurpartial-29.1° (Below horizon)06:4509:1011:36
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