381.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from Antarctica. Sun, 12 Sep 2021 at 10:20 EDT (1,038 days ago) in Scorpius

382.

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. Mon, 13 Sep 2021 at 16:39 EDT (1,037 days ago) in Ophiuchus

383.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Mon, 13 Sep 2021 at 17:55 EDT (1,037 days ago) in Virgo

384.

Neptune at opposition Neptune lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 14 Sep 2021 at 05:12 EDT (1,036 days ago) in Aquarius

385.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from countries and territories including Australia, Papua New Guinea, Indonesia and Solomon Islands amongst others. Wed, 15 Sep 2021 at 05:23 EDT (1,035 days ago) in Sagittarius

386.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°45'. Thu, 16 Sep 2021 at 22:33 EDT (1,034 days ago) in Capricornus

387.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Thu, 16 Sep 2021 at 23:57 EDT (1,034 days ago) in Capricornus

388.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Fri, 17 Sep 2021 at 22:57 EDT (1,033 days ago) in Virgo

389.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°57'. Sat, 18 Sep 2021 at 02:54 EDT (1,032 days ago) in Capricornus

390.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sat, 18 Sep 2021 at 05:07 EDT (1,032 days ago) in Capricornus

391.

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, 18 Sep 2021 at 12:44 EDT (1,032 days ago) in Aquarius

392.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Mon, 20 Sep 2021 at 07:33 EDT (1,030 days ago) in Virgo

393.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 20 Sep 2021 at 19:54 EDT (1,030 days ago) in Pisces

394.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Wed, 22 Sep 2021 at 15:14 EDT (1,028 days ago) in Virgo

395.

Close approach of the Moon and Uranus The Moon and Uranus pass close to each other. Fri, 24 Sep 2021 at 13:08 EDT (1,026 days ago) in Aries

396.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Fri, 24 Sep 2021 (1,026 days ago) in Sculptor

397.

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, 26 Sep 2021 at 17:43 EDT (1,024 days ago) in Taurus

398.

Daytime Sextantid meteor shower 2021 The Daytime Sextantid meteor shower reaches its peak. Mon, 27 Sep 2021 (1,023 days ago) in Sextans

399.

47 Tuc is well placed The second brightest globular cluster in the sky, 47 Tuc (NGC 104; mag 4.0), in Tucana culminates at around midnight local time. Mon, 27 Sep 2021 (1,023 days ago) in Tucana

400.

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. Tue, 28 Sep 2021 at 21:57 EDT (1,022 days ago) in Gemini