501.

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. Sat, 21 Nov 2020 at 23:45 EDT (1,315 days ago) in Aquarius

502.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 4°54'. Wed, 25 Nov 2020 at 14:46 EDT (1,312 days ago) in Pisces

503.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Wed, 25 Nov 2020 at 18:59 EDT (1,312 days ago) in Pisces

504.

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. Thu, 26 Nov 2020 at 19:28 EDT (1,311 days ago) in Pisces

505.

The Hyades cluster is well placed The Hyades open star cluster (Collinder 50; mag 1.0) in Taurus culminates at around midnight local time. Fri, 27 Nov 2020 (1,310 days ago) in Taurus

506.

November Orionid meteor shower 2020 The November Orionid meteor shower reaches its peak. Fri, 27 Nov 2020 (1,309 days ago) in Orion

507.

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. Sat, 28 Nov 2020 at 07:41 EDT (1,309 days ago) in Aries

508.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sat, 28 Nov 2020 at 19:57 EDT (1,309 days ago) in Aquarius

509.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 30 Nov 2020 at 04:29 EDT (1,307 days ago) in Taurus

510.

Penumbral lunar eclipse There will be an eclipse of the Moon, visible from the Americas, Russia, Eastern and Southeast Asia, Oceania and Alaska. Mon, 30 Nov 2020 at 04:44 EDT (1,307 days ago) in Taurus

511.

Comet C/2019 N1 (ATLAS) passes perihelion Comet C/2019 N1 (ATLAS) makes its closest approach to the Sun. Mon, 30 Nov 2020 (1,307 days ago) in Virgo

512.

Pheonicid meteor shower 2020 The Pheonicid meteor shower reaches its peak. Tue, 01 Dec 2020 (1,305 days ago) in Phoenix

513.

Gaia Early Data Release 3 Astronomers release the most detailed census of the stars in the Milky Way ever made. Thu, 03 Dec 2020 at 06:00 EDT (1,304 days ago)

514.

December φ-Cassiopeid meteor shower 2020 The December φ-Cassiopeid meteor shower reaches its peak. Sat, 05 Dec 2020 (1,302 days ago) in Andromeda

515.

Puppid-Velid meteor shower 2020 The Puppid-Velid meteor shower reaches its peak. Sun, 06 Dec 2020 (1,301 days ago) in Vela

516.

Asteroid 16 Psyche at opposition Asteroid 16 Psyche makes closest approach to the Earth. Mon, 07 Dec 2020 at 06:58 EDT (1,300 days ago) in Taurus

517.

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, 07 Dec 2020 at 19:37 EDT (1,300 days ago) in Leo

518.

Monocerotid meteor shower 2020 The Monocerotid meteor shower reaches its peak. Tue, 08 Dec 2020 (1,299 days ago) in Monoceros

519.

Asteroid 79 Eurynome at opposition Asteroid 79 Eurynome makes closest approach to the Earth. Fri, 11 Dec 2020 at 06:58 EDT (1,296 days ago) in Orion

520.

Comet C/2020 S3 (Erasmus) passes perihelion Comet C/2020 S3 (Erasmus) makes its closest approach to the Sun. Fri, 11 Dec 2020 (1,296 days ago) in Scorpius