321.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Tue, 19 Oct 2021 at 20:51 GMT-03 (942 days ago) in Virgo

322.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 20 Oct 2021 at 11:56 GMT-03 (941 days ago) in Pisces

323.

Orionid meteor shower 2021 The Orionid meteor shower reaches its peak. Thu, 21 Oct 2021 (940 days ago) in Orion

324.

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 19:08 GMT-03 (940 days ago) in Bootes

325.

Close approach of the Moon and Uranus The Moon and Uranus pass close to each other. Thu, 21 Oct 2021 at 19:39 GMT-03 (940 days ago) in Aries

326.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Sat, 23 Oct 2021 at 19:40 GMT-03 (938 days ago) in Virgo

327.

Leonis Minorid meteor shower 2021 The Leonis Minorid meteor shower reaches its peak. Sun, 24 Oct 2021 (937 days ago) in Leo Minor

328.

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 12:28 GMT-03 (937 days ago) in Taurus

329.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Mon, 25 Oct 2021 (936 days ago) in Virgo

330.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 25 Oct 2021 at 00:45 GMT-03 (936 days ago) in Virgo

331.

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 (935 days ago) in Perseus

332.

Venus at dichotomy Venus reaches half phase in the evening sky. Thu, 28 Oct 2021 at 11:28 GMT-03 (933 days ago) in Ophiuchus

333.

Venus at highest altitude in evening sky Venus is bright and well placed in the evening sky. Thu, 28 Oct 2021 (933 days ago) in Ophiuchus

334.

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 17:05 GMT-03 (933 days ago) in Cancer

335.

Venus at greatest elongation east Venus is bright and well placed in the evening sky. Fri, 29 Oct 2021 at 11:57 GMT-03 (932 days ago) in Ophiuchus

336.

Comet 67P/Churyumov-Gerasimenko passes perihelion Comet 67P/Churyumov-Gerasimenko makes its closest approach to the Sun. Tue, 02 Nov 2021 (928 days ago) in Gemini

337.

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 15:39 GMT-03 (927 days ago) in Virgo

338.

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 16:36 GMT-03 (927 days ago) in Virgo

339.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 04 Nov 2021 at 18:15 GMT-03 (926 days ago) in Libra

340.

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 20:49 GMT-03 (926 days ago) in Aries