501.

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 (1,044 days ago) in Capricornus

502.

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 (1,044 days ago) in Capricornus

503.

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 (1,044 days ago) in Capricornus

504.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 20 Aug 2021 at 19:39 EDT (1,044 days ago) in Capricornus

505.

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 (1,042 days ago) in Capricornus

506.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 22 Aug 2021 at 03:11 EDT (1,042 days ago) in Capricornus

507.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 22 Aug 2021 at 08:01 EDT (1,042 days ago) in Aquarius

508.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Tue, 24 Aug 2021 at 03:10 EDT (1,040 days ago) in Aquarius

509.

Comet 8P/Tuttle passes perihelion Comet 8P/Tuttle makes its closest approach to the Sun. Sat, 28 Aug 2021 (1,036 days ago) in Hydra

510.

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 (1,035 days ago) in Taurus

511.

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 (1,034 days ago) in Taurus

512.

Comet 8P/Tuttle reaches peak brightness Comet 8P/Tuttle is forecast to reach the brightest point in its 2021 apparition. Tue, 31 Aug 2021 (1,033 days ago) in Hydra

513.

Aurigid meteor shower 2021 The Aurigid meteor shower reaches its peak. Tue, 31 Aug 2021 (1,032 days ago) in Auriga

514.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Thu, 02 Sep 2021 (1,031 days ago) in Virgo

515.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Sun, 05 Sep 2021 at 20:28 EDT (1,028 days ago) in Virgo

516.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 06 Sep 2021 at 20:52 EDT (1,027 days ago) in Leo

517.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°31'. Wed, 08 Sep 2021 at 16:18 EDT (1,025 days ago) in Virgo

518.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Wed, 08 Sep 2021 at 20:17 EDT (1,025 days ago) in Virgo

519.

September ε-Perseid meteor shower 2021 The September ε-Perseid meteor shower reaches its peak. Thu, 09 Sep 2021 (1,024 days ago) in Perseus

520.

Comet 4P/Faye passes perihelion Comet 4P/Faye makes its closest approach to the Sun. Thu, 09 Sep 2021 (1,024 days ago) in Taurus