An annular eclipse of the Sun occurred on Friday 20 May, 1966 UT, with maximum eclipse at 09:38 UT. A large annular eclipse covered over 99% of the Sun, creating a dramatic spectacle for observers in only a tiny path, just 3 km wide; it lasted a brief 5 seconds at the point of maximum eclipse.

The annular eclipse lasted for 5 seconds. Maximum eclipse was at 09:38:25 UT.

During this eclipse the Sun was 0.527° in apparent diameter, 1.2% smaller than average. The Moon was 7 days after apogee and 7 days before perigee. At maximum eclipse it was 0.526° in apparent diameter, which is 0.9% smaller than average; this was not large enough to cover the Sun, which is why this was an annular eclipse. 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. The shaded area saw the annular solar eclipse; however, near the edges of this area, the eclipse was very short. The bold line shows the centre of the path, where the eclipse lasted longest.

Use the zoom controls to zoom in and out; hover your mouse over any point on the centreline to see the time and duration of the eclipse at that point. You can pan and zoom the map to see detail for any part of the eclipse path.

Overview Map

This map sourced from NASA's Eclipse Web Site shows the visibility of the annular solar eclipse. It also shows the broader area in which a partial eclipse was seen. (Click on it for the full-sized version.)

Eclipse Season and Saros Series

This eclipse season contains 2 eclipses:

This was the 33rd eclipse in solar Saros series 137.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 09:38:25 on 20 May UT TDT Date/time (max) 09:39:02 on 20 May TDT
Saros Series 137 Number in Series 32
Penumbral Magnitiude Central Magnitiude 0.9991
Gamma 0.3467 Path Width (km) 3
Delta T 0m37s Error ± 0m00s (95%)
Penumbral Duration Partial Duration
Total Duration 0m05s
Partial Rating Total Rating
Sun Distance 151395297 km (88.9%) Moon Distance 384058 km (55.0%)
Sun Diameter 0.527° Moon Diameter 0.518° - 0.526°
Apogee 12:59 on 13 May UT Perigee 13:59 on 27 May 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.