421.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from Antarctica, New Zealand and Macquarie Island. Mon, 16 Aug 2021 at 05:00 EDT (1,021 days ago) in Scorpius

422.

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. Tue, 17 Aug 2021 at 05:15 EDT (1,020 days ago) in Ophiuchus

423.

κ-Cygnid meteor shower 2021 The κ-Cygnid meteor shower reaches its peak. Tue, 17 Aug 2021 (1,019 days ago) in Draco

424.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from the Americas, Bonaire, Saint Eustatius and Saba, Clipperton Island, Grenada and Navassa Island. Wed, 18 Aug 2021 at 23:28 EDT (1,019 days ago) in Sagittarius

425.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 4'48". Thu, 19 Aug 2021 at 00:09 EDT (1,018 days ago) in Leo

426.

Asteroid 43 Ariadne at opposition Asteroid 43 Ariadne makes closest approach to the Earth. Thu, 19 Aug 2021 at 07:58 EDT (1,018 days ago) in Aquarius

427.

Jupiter at opposition Jupiter lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Thu, 19 Aug 2021 at 20:20 EDT (1,018 days ago) in Capricornus

428.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Thu, 19 Aug 2021 at 20:57 EDT (1,018 days ago) in Aries

429.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Fri, 20 Aug 2021 at 01:25 EDT (1,017 days ago) in Capricornus

430.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°42'. Fri, 20 Aug 2021 at 18:15 EDT (1,017 days ago) in Capricornus

431.

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. Fri, 20 Aug 2021 at 19:31 EDT (1,017 days ago) in Capricornus

432.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 20 Aug 2021 at 19:39 EDT (1,017 days ago) in Capricornus

433.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°57'. Sun, 22 Aug 2021 at 00:56 EDT (1,015 days ago) in Capricornus

434.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 22 Aug 2021 at 03:11 EDT (1,015 days ago) in Capricornus

435.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 22 Aug 2021 at 08:01 EDT (1,015 days ago) in Aquarius

436.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Tue, 24 Aug 2021 at 03:10 EDT (1,013 days ago) in Aquarius

437.

Comet 8P/Tuttle passes perihelion Comet 8P/Tuttle makes its closest approach to the Sun. Sat, 28 Aug 2021 (1,009 days ago) in Hydra

438.

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. Sun, 29 Aug 2021 at 22:22 EDT (1,008 days ago) in Taurus

439.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Mon, 30 Aug 2021 at 03:13 EDT (1,007 days ago) in Taurus

440.

Comet 8P/Tuttle reaches peak brightness Comet 8P/Tuttle is forecast to reach the brightest point in its 2021 apparition. Tue, 31 Aug 2021 (1,006 days ago) in Hydra