261.

Lunar occultation of Jupiter The Moon will pass in front of Jupiter, creating a lunar occultation visible from Greenland and Canada. Tue, 12 Aug 1980 at 17:24 EDT (15,956 days ago) in Leo

262.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Wed, 13 Aug 1980 at 02:01 EDT (15,955 days ago) in Cancer

263.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°01'. Wed, 13 Aug 1980 at 15:27 EDT (15,955 days ago) in Virgo

264.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Wed, 13 Aug 1980 at 16:08 EDT (15,955 days ago) in Virgo

265.

Lunar occultation of Saturn The Moon will pass in front of Saturn creating a lunar occultation, though it will open be visible only at sea. Wed, 13 Aug 1980 at 16:08 EDT (15,955 days ago) in Virgo

266.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Fri, 15 Aug 1980 at 14:04 EDT (15,953 days ago) in Virgo

267.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5°05'. Fri, 15 Aug 1980 at 17:06 EDT (15,953 days ago) in Virgo

268.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 15 Aug 1980 at 20:41 EDT (15,953 days ago) in Virgo

269.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 16 Aug 1980 at 23:31 EDT (15,952 days ago) in Leo Minor

270.

κ-Cygnid meteor shower 1980 The κ-Cygnid meteor shower reaches its peak. Sun, 17 Aug 1980 (15,951 days ago) in Draco

271.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Mon, 18 Aug 1980 at 18:28 EDT (15,950 days ago) in Libra

272.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Sun, 24 Aug 1980 at 01:26 EDT (15,944 days ago) in Capricornus

273.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 24 Aug 1980 at 05:31 EDT (15,944 days ago) in Gemini

274.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Mon, 25 Aug 1980 at 05:18 EDT (15,943 days ago) in Gemini

275.

Penumbral lunar eclipse There will be an eclipse of the Moon, visible from Antarctica, the Americas, Africa and Europe. Mon, 25 Aug 1980 at 23:31 EDT (15,943 days ago) in Aquarius

276.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 25 Aug 1980 at 23:42 EDT (15,943 days ago) in Aquarius

277.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Tue, 26 Aug 1980 at 08:00 EDT (15,942 days ago) in Leo

278.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Wed, 27 Aug 1980 at 15:06 EDT (15,941 days ago) in Pisces

279.

Aurigid meteor shower 1980 The Aurigid meteor shower reaches its peak. Sun, 31 Aug 1980 (15,937 days ago) in Auriga

280.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 31 Aug 1980 at 19:35 EDT (15,937 days ago) in Ophiuchus