461.

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, 19 Sep 2023 at 07:09 EDT (331 days ago) in Pisces

462.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from Japan, Russia, Guam and Northern Mariana Islands. Thu, 21 Sep 2023 at 04:47 EDT (329 days ago) in Scorpius

463.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Fri, 22 Sep 2023 at 07:27 EDT (328 days ago) in Leo

464.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Fri, 22 Sep 2023 at 15:26 EDT (328 days ago) in Leo

465.

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. Fri, 22 Sep 2023 at 15:32 EDT (328 days ago) in Sagittarius

466.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Sat, 23 Sep 2023 at 02:46 EDT (327 days ago) in Virgo

467.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Sat, 23 Sep 2023 (327 days ago) in Leo

468.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sat, 23 Sep 2023 at 14:06 EDT (327 days ago) in Leo

469.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Mon, 25 Sep 2023 (325 days ago) in Sculptor

470.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°38'. Tue, 26 Sep 2023 at 21:29 EDT (324 days ago) in Aquarius

471.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 26 Sep 2023 at 23:12 EDT (324 days ago) in Aquarius

472.

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. Wed, 27 Sep 2023 at 02:44 EDT (323 days ago) in Aquarius

473.

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. Wed, 27 Sep 2023 (323 days ago) in Tucana

474.

Daytime Sextantid meteor shower 2023 The Daytime Sextantid meteor shower reaches its peak. Wed, 27 Sep 2023 (322 days ago) in Sextans

475.

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. Wed, 27 Sep 2023 at 20:58 EDT (323 days ago) in Aquarius

476.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 29 Sep 2023 at 05:57 EDT (321 days ago) in Pisces

477.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 01 Oct 2023 at 21:08 EDT (319 days ago) in Aries

478.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°23'. Sun, 01 Oct 2023 at 23:19 EDT (319 days ago) in Aries

479.

Asteroid 29 Amphitrite at opposition Asteroid 29 Amphitrite makes closest approach to the Earth. Mon, 02 Oct 2023 at 00:46 EDT (318 days ago) in Pisces

480.

The Andromeda Galaxy is well placed The Andromeda Galaxy M31 (mag 3.4) culminates at around midnight local time. Mon, 02 Oct 2023 (318 days ago) in Andromeda