21.

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. Fri, 05 Nov 2021 at 18:17 EDT (893 days ago) in Libra

22.

Uranus at opposition Uranus lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Thu, 04 Nov 2021 at 19:49 EDT (894 days ago) in Aries

23.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 04 Nov 2021 at 17:15 EDT (894 days ago) in Libra

24.

Lunar occultation of Mercury The Moon will pass in front of Mercury, creating a lunar occultation visible from Canada and the Contiguous United States. Wed, 03 Nov 2021 at 15:36 EDT (895 days ago) in Virgo

25.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 1°13'. Wed, 03 Nov 2021 at 14:39 EDT (895 days ago) in Virgo

26.

Comet 67P/Churyumov-Gerasimenko passes perihelion Comet 67P/Churyumov-Gerasimenko makes its closest approach to the Sun. Tue, 02 Nov 2021 (896 days ago) in Gemini

27.

Venus at greatest elongation east Venus is bright and well placed in the evening sky. Fri, 29 Oct 2021 at 10:57 EDT (900 days ago) in Ophiuchus

28.

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. Thu, 28 Oct 2021 at 16:05 EDT (901 days ago) in Cancer

29.

Venus at dichotomy Venus reaches half phase in the evening sky. Thu, 28 Oct 2021 at 10:28 EDT (901 days ago) in Ophiuchus

30.

The Perseus Double Cluster is well placed The Perseus Double Cluster (NGC 869 and NGC 884; combined mag 4.3) culminates at around midnight local time. Tue, 26 Oct 2021 (903 days ago) in Perseus

31.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sun, 24 Oct 2021 at 23:45 EDT (905 days ago) in Virgo

32.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Sun, 24 Oct 2021 (904 days ago) in Virgo

33.

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, 24 Oct 2021 at 11:28 EDT (905 days ago) in Taurus

34.

Leonis Minorid meteor shower 2021 The Leonis Minorid meteor shower reaches its peak. Sun, 24 Oct 2021 (905 days ago) in Leo Minor

35.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Sat, 23 Oct 2021 at 18:40 EDT (906 days ago) in Virgo

36.

Close approach of the Moon and Uranus The Moon and Uranus pass close to each other. Thu, 21 Oct 2021 at 18:39 EDT (908 days ago) in Aries

37.

136108 Haumea at solar conjunction 136108 Haumea is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 21 Oct 2021 at 18:08 EDT (908 days ago) in Bootes

38.

Orionid meteor shower 2021 The Orionid meteor shower reaches its peak. Thu, 21 Oct 2021 (908 days ago) in Orion

39.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 20 Oct 2021 at 10:56 EDT (909 days ago) in Pisces

40.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Tue, 19 Oct 2021 at 19:51 EDT (910 days ago) in Virgo