4101.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°03'. Fri, 15 Sep 2028 at 14:23 EDT (1,531 days away) in Cancer

4102.

Close approach of Mars and M44 Mars and M44 pass close to each other. Sat, 16 Sep 2028 at 18:58 EDT (1,532 days away) in Cancer

4103.

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. Mon, 18 Sep 2028 at 10:20 EDT (1,534 days away) in Leo

4104.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 18 Sep 2028 at 14:24 EDT (1,534 days away) in Virgo

4105.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Mon, 18 Sep 2028 at 21:13 EDT (1,534 days away) in Taurus

4106.

Lunar occultation of Mercury The Moon will pass in front of Mercury, creating a lunar occultation visible from Antarctica. Wed, 20 Sep 2028 at 01:22 EDT (1,536 days away) in Virgo

4107.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 1°13'. Wed, 20 Sep 2028 at 02:07 EDT (1,536 days away) in Virgo

4108.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Wed, 20 Sep 2028 at 19:41 EDT (1,536 days away) in Virgo

4109.

Comet 58P/Jackson-Neujmin passes perigee Comet 58P/Jackson-Neujmin makes its closest approach to the Earth. Thu, 21 Sep 2028 (1,537 days away) in Eridanus

4110.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Fri, 22 Sep 2028 at 07:51 EDT (1,538 days away) in Virgo

4111.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Sun, 24 Sep 2028 (1,540 days away) in Sculptor

4112.

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, 25 Sep 2028 at 09:10 EDT (1,541 days away) in Sagittarius

4113.

Daytime Sextantid meteor shower 2028 The Daytime Sextantid meteor shower reaches its peak. Wed, 27 Sep 2028 (1,543 days away) in Sextans

4114.

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 2028 (1,543 days away) in Tucana

4115.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Fri, 29 Sep 2028 at 04:51 EDT (1,545 days away) in Virgo

4116.

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. Fri, 29 Sep 2028 at 22:39 EDT (1,545 days away) in Cetus

4117.

Jupiter at solar conjunction Jupiter is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 30 Sep 2028 at 08:40 EDT (1,546 days away) in Virgo

4118.

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, 30 Sep 2028 at 09:43 EDT (1,546 days away) in Aquarius

4119.

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, 01 Oct 2028 at 17:38 EDT (1,547 days away) in Pisces

4120.

The Andromeda Galaxy is well placed The Andromeda Galaxy M31 (mag 3.4) culminates at around midnight local time. Sun, 01 Oct 2028 (1,547 days away) in Andromeda