1.

Uranus at solar conjunction Uranus 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, 17 May 2025 at 16:23 PDT (14 days ago) in Taurus

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. Tue, 20 May 2025 at 04:59 PDT (11 days ago) in Aquarius

3.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Thu, 22 May 2025 at 08:44 PDT (9 days ago) in Pisces

4.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°49'. Thu, 22 May 2025 at 11:00 PDT (9 days ago) in Pisces

5.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Fri, 23 May 2025 at 13:38 PDT (8 days ago) in Pisces

6.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°59'. Fri, 23 May 2025 at 16:51 PDT (8 days ago) in Pisces

7.

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. Sun, 25 May 2025 at 13:15 PDT (6 days ago) in Aries

8.

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. Sun, 25 May 2025 at 18:33 PDT (6 days ago) in Aries

9.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 26 May 2025 at 20:03 PDT (5 days ago) in Taurus

10.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 5°12'. Wed, 28 May 2025 at 06:13 PDT (3 days ago) in Taurus

11.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Wed, 28 May 2025 (3 days ago) in Scorpius

12.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Thu, 29 May 2025 at 21:19 PDT (2 days ago) in Taurus

13.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sat, 31 May 2025 at 06:26 PDT (9 hours ago) in Taurus

14.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Sat, 31 May 2025 at 13:57 PDT (2 hours ago) in Pisces

15.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 1°23'. Sun, 01 Jun 2025 at 02:48 PDT (10 hours away) in Leo

16.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 01 Jun 2025 at 03:52 PDT (11 hours away) in Leo

17.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 01 Jun 2025 at 14:31 PDT (22 hours away) in Pisces

18.

The Great Globular Cluster in Hercules is well placed The Great Globular Cluster in Hercules (M13, NGC 6205; mag 5.8) culminates at around midnight local time. Mon, 02 Jun 2025 (2 days away) in Hercules

19.

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, 02 Jun 2025 at 20:41 PDT (2 days away) in Leo

20.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Tue, 03 Jun 2025 (3 days away) in Ophiuchus