1.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from Antarctica, New Zealand and Macquarie Island. Thu, 09 Apr 2026 at 06:49 PDT (14 days ago) in Sagittarius

2.

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, 09 Apr 2026 at 21:52 PDT (14 days ago) in Sagittarius

3.

Conjunction of Mars and Neptune Mars and Neptune share the same right ascension, at a separation of 20'. Mon, 13 Apr 2026 at 02:59 PDT (10 days ago) in Pisces

4.

Centaurus A is well placed Centaurus A (NGC 5128; mag 7.0) culminates at around midnight local time. Mon, 13 Apr 2026 (10 days ago) in Centaurus

5.

Omega Centauri is well placed The brightest globular cluster in the sky, Omega Centauri (mag 3.6) culminates at around midnight local time. Mon, 13 Apr 2026 (10 days ago) in Centaurus

6.

The Moon at perihelion The Moon passes its closest point to the Sun, a monthly occurrence around the time of new moon. Tue, 14 Apr 2026 at 14:52 PDT (9 days ago) in Pisces

7.

The Whirlpool Galaxy is well placed The Whirlpool Galaxy M51 (NGC 5194; mag 8.4) in Canes Venatici culminates at around midnight local time. Tue, 14 Apr 2026 (9 days ago) in Canes Venatici

8.

136199 Eris at solar conjunction 136199 Eris is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Tue, 14 Apr 2026 at 22:34 PDT (9 days ago) in Cetus

9.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 5°12'. Wed, 15 Apr 2026 at 12:11 PDT (8 days ago) in Pisces

10.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°42'. Wed, 15 Apr 2026 at 17:46 PDT (8 days ago) in Pisces

11.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 5°14'. Wed, 15 Apr 2026 at 23:08 PDT (8 days ago) in Cetus

12.

Conjunction of Mercury and Neptune Mercury and Neptune share the same right ascension, at a separation of 1°25'. Thu, 16 Apr 2026 at 09:26 PDT (7 days ago) in Pisces

13.

Messier 83 is well placed The Southern Pinwheel Galaxy M83 (NGC 5236; mag 7.2), a face-on spiral galaxy in Hydra culminates at around midnight local time. Thu, 16 Apr 2026 (7 days ago) in Hydra

14.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 17 Apr 2026 at 04:52 PDT (6 days ago) in Pisces

15.

Messier 3 is well placed The globular cluster M3 (NGC 5272; mag 6.3) in Canes Venatici culminates at around midnight local time. Fri, 17 Apr 2026 (6 days ago) in Canes Venatici

16.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, appearing larger than at other times of the month – though only very fractionally. Sat, 18 Apr 2026 at 23:55 PDT (5 days ago) in Aries

17.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 4°45'. Sun, 19 Apr 2026 at 01:48 PDT (4 days ago) in Taurus

18.

Comet C/2025 R3 (PANSTARRS) passes perihelion Comet C/2025 R3 (PANSTARRS) makes its closest approach to the Sun. Sun, 19 Apr 2026 (4 days ago) in Pisces

19.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Sun, 19 Apr 2026 at 09:52 PDT (4 days ago) in Taurus

20.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 1°48'. Sun, 19 Apr 2026 at 17:00 PDT (4 days ago) in Cetus