421.

Messier 15 is well placed The globular cluster M15 (NGC 7078; mag 6.3) in Pegasus culminates at around midnight local time. Sat, 14 Aug 2021 (1,067 days ago) in Pegasus

422.

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. Sun, 15 Aug 2021 at 11:20 EDT (1,066 days ago) in Libra

423.

Messier 2 is well placed The globular cluster M2 (NGC 7089; mag 6.6) in Aquarius culminates at around midnight local time. Sun, 15 Aug 2021 (1,066 days ago) in Aquarius

424.

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 (1,065 days ago) in Scorpius

425.

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 (1,064 days ago) in Ophiuchus

426.

κ-Cygnid meteor shower 2021 The κ-Cygnid meteor shower reaches its peak. Tue, 17 Aug 2021 (1,063 days ago) in Draco

427.

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 (1,063 days ago) in Sagittarius

428.

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 (1,062 days ago) in Leo

429.

Asteroid 43 Ariadne at opposition Asteroid 43 Ariadne makes closest approach to the Earth. Thu, 19 Aug 2021 at 07:58 EDT (1,062 days ago) in Aquarius

430.

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 (1,062 days ago) in Capricornus

431.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Thu, 19 Aug 2021 at 20:57 EDT (1,062 days ago) in Aries

432.

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 (1,061 days ago) in Capricornus

433.

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 (1,061 days ago) in Capricornus

434.

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 (1,061 days ago) in Capricornus

435.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 20 Aug 2021 at 19:39 EDT (1,061 days ago) in Capricornus

436.

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 (1,059 days ago) in Capricornus

437.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 22 Aug 2021 at 03:11 EDT (1,059 days ago) in Capricornus

438.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 22 Aug 2021 at 08:01 EDT (1,059 days ago) in Aquarius

439.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Tue, 24 Aug 2021 at 03:10 EDT (1,057 days ago) in Aquarius

440.

Comet 8P/Tuttle passes perihelion Comet 8P/Tuttle makes its closest approach to the Sun. Sat, 28 Aug 2021 (1,053 days ago) in Hydra