301.

Messier 62 is well placed The globular cluster M62 (NGC 6266; mag 6.4) in Ophiuchus culminates at around midnight local time. Wed, 07 Jun 2017 (2,959 days ago) in Ophiuchus

302.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Mon, 05 Jun 2017 (2,961 days ago) in Ophiuchus

303.

1 Ceres at solar conjunction 1 Ceres is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 04 Jun 2017 at 13:07 PDT (2,962 days ago) in Taurus

304.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sat, 03 Jun 2017 at 23:05 PDT (2,963 days ago) in Pisces

305.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sat, 03 Jun 2017 at 18:27 PDT (2,963 days ago) in Virgo

306.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°19'. Sat, 03 Jun 2017 at 16:58 PDT (2,963 days ago) in Virgo

307.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Sat, 03 Jun 2017 (2,963 days ago) in Ophiuchus

308.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Fri, 02 Jun 2017 at 23:11 PDT (2,964 days ago) in Pisces

309.

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. Fri, 02 Jun 2017 (2,964 days ago) in Hercules

310.

Conjunction of Venus and Uranus Venus and Uranus share the same right ascension, at a separation of 1°46'. Fri, 02 Jun 2017 at 07:40 PDT (2,964 days ago) in Pisces

311.

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. Thu, 01 Jun 2017 at 05:42 PDT (2,965 days ago) in Leo

312.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Africa. Wed, 31 May 2017 at 09:25 PDT (2,966 days ago) in Leo

313.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Sun, 28 May 2017 (2,969 days ago) in Scorpius

314.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5°21'. Fri, 26 May 2017 at 18:56 PDT (2,971 days ago) in Taurus

315.

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. Thu, 25 May 2017 at 18:20 PDT (2,972 days ago) in Taurus

316.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 25 May 2017 at 12:45 PDT (2,972 days ago) in Taurus

317.

Supernova SN2017ein discovered A new supernova has been discovered in NGC 3938. Wed, 24 May 2017 (2,972 days ago)

318.

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, 24 May 2017 at 02:25 PDT (2,973 days ago) in Aries

319.

Close approach of the Moon and Mercury The Moon and Mercury pass close to each other. Tue, 23 May 2017 at 19:07 PDT (2,974 days ago) in Aries

320.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 1°36'. Tue, 23 May 2017 at 18:19 PDT (2,974 days ago) in Aries