401.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from countries and territories including the Contiguous United States, Mexico, Hawaii and Kiribati amongst others. Fri, 25 Jun 2021 at 05:40 EDT (1,118 days ago) in Sagittarius

402.

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. Fri, 25 Jun 2021 at 01:47 EDT (1,118 days ago) in Sagittarius

403.

Full Moon The Moon reaches full phase and is visible for much of the night. Thu, 24 Jun 2021 at 14:39 EDT (1,119 days ago) in Sagittarius

404.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Wed, 23 Jun 2021 (1,120 days ago) in Corona Australis

405.

Close approach of Mars and M44 Mars and M44 pass close to each other. Wed, 23 Jun 2021 at 18:35 EDT (1,120 days ago) in Cancer

406.

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, 23 Jun 2021 at 05:54 EDT (1,120 days ago) in Ophiuchus

407.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Tue, 22 Jun 2021 (1,121 days ago) in Sagittarius

408.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from Sub-Saharan Africa, Australia and Heard Island and McDonald Islands. Tue, 22 Jun 2021 at 14:28 EDT (1,121 days ago) in Scorpius

409.

June solstice 21 June will be the longest day of 2021 in the northern hemisphere. Sun, 20 Jun 2021 at 23:25 EDT (1,123 days ago) in Taurus

410.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Sun, 20 Jun 2021 (1,123 days ago) in Scorpius

411.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Sun, 20 Jun 2021 at 11:07 EDT (1,123 days ago) in Aquarius

412.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Fri, 18 Jun 2021 (1,125 days ago) in Ophiuchus

413.

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, 17 Jun 2021 at 23:54 EDT (1,126 days ago) in Virgo

414.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Thu, 17 Jun 2021 (1,126 days ago) in Ara

415.

Comet 15P/Finlay passes perigee Comet 15P/Finlay makes its closest approach to the Earth. Thu, 17 Jun 2021 (1,126 days ago) in Pisces

416.

The Butterfly cluster is well placed The Butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius culminates at around midnight local time. Wed, 16 Jun 2021 (1,127 days ago) in Scorpius

417.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Tue, 15 Jun 2021 (1,128 days ago) in Scorpius

418.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 13 Jun 2021 at 16:47 EDT (1,130 days ago) in Cancer

419.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 2°48'. Sun, 13 Jun 2021 at 15:52 EDT (1,130 days ago) in Cancer

420.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Sat, 12 Jun 2021 at 17:18 EDT (1,131 days ago) in Gemini