A penumbral eclipse of the Moon occurs on Tuesday 17 August, 2027 UT, lasting from 05:24–09:03 UT. This very subtle penumbral eclipse eclipse will be essentially invisible to the naked eye; though it will last 3 hours and 39 minutes, just 55% of the Moon's disc will be in partial shadow (with no part of it in complete shadow). The full Moon itself will be visible from eastern Australia and New Zealand, the Americas, and far western Africa.

The timings of the eclipse are as follows. You will be able to see the eclipse if the Moon is up as seen from your location; but note that this penumbral eclipse will be very difficult to see in practice:

Penumbral eclipse begins: 05:24:29 UT
Maximum eclipse: 07:13:43 UT
Penumbral eclipse ends: 09:03:03 UT

During this eclipse the Moon will be just a day past apogee, making it very small. At maximum eclipse it will be 0.499° in apparent diameter, which is 6.0% smaller than average. The statistics page has information on the ranges of the sizes of the Sun and Moon.

Interactive Map

This map shows the visibility of the eclipse at maximum eclipse, when it will be visible within the bright area on the map. Note that the map is approximate, and if you are near the edge of the area of visibility, the moon will be very close to the horizon and may not be practically visible.

You can use the zoom controls to zoom in and out, and pan to see areas of interest. The green marker in the centre shows where the Moon will be directly overhead at maximum eclipse.

Overview Map

This map sourced from NASA's Eclipse Web Site shows the visibility of the eclipse. (Click on it for the full-sized version.)

Eclipse Season and Saros Series

This eclipse season contains 3 eclipses:

This is the 4th eclipse in lunar Saros series 148.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 07:13:43 on 17 Aug UT TDT Date/time (max) 07:14:59 on 17 Aug TDT
Saros Series 148 Number in Series 3
Penumbral Magnitiude 0.5456 Central Magnitiude -0.5254
Gamma 1.2797 Path Width (km)
Delta T 1m16s Error ± 0m10s (95%)
Penumbral Duration 3h39m Partial Duration
Total Duration
Partial Rating Total Rating
Sun Distance 151465584 km (90.4%) Moon Distance 405090 km (96.8%)
Sun Diameter 0.527° Moon Diameter 0.491° - 0.499°
Apogee 14:24 on 15 Aug UT Perigee 15:37 on 30 Aug UT
Contact p1 05:24:29 on 17 Aug UT Contact p2
Contact u1 Contact u2
Max eclipse 07:13:43 on 17 Aug UT
Contact u3 Contact u4
Contact p3 Contact p4 09:03:03 on 17 Aug UT

Note that while all dates and times on this site (except where noted) are in UT, which is within a second of civil time, the dates and times shown in NASA's eclipse listings are in the TDT timescale.

The Sun and Moon distances are shown in km, and as a percentage of their minimum - maximum distances; hence 0% is the closest possible (Earth's perihelion, or the Moon's closest possible perigee) and 100% is the farthest (aphelion, the farthest apogee). The statistics page has information on the ranges of sizes of the Sun and Moon.

Data last updated: 2015-06-21 22:11:46 UTC.