401.

Neptune at solar conjunction Neptune 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, 14 Dec 1980 at 00:17 EDT (15,844 days ago) in Ophiuchus

402.

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. Sun, 14 Dec 1980 at 20:47 EDT (15,844 days ago) in Aquarius

403.

Comae Berenicid meteor shower 1980 The Comae Berenicid meteor shower reaches its peak. Mon, 15 Dec 1980 (15,843 days ago) in Leo

404.

Conjunction of Venus and Uranus Venus and Uranus share the same right ascension, at a separation of 1°14'. Mon, 15 Dec 1980 at 20:50 EDT (15,843 days ago) in Libra

405.

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. Fri, 19 Dec 1980 at 00:21 EDT (15,839 days ago) in Taurus

406.

December Leonis Minorid meteor shower 1980 The December Leonis Minorid meteor shower reaches its peak. Fri, 19 Dec 1980 (15,839 days ago) in Leo Minor

407.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Fri, 19 Dec 1980 at 23:31 EDT (15,838 days ago) in Taurus

408.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from countries and territories including Russia, Canada, Greenland and Alaska amongst others. Sat, 20 Dec 1980 at 03:08 EDT (15,838 days ago) in Taurus

409.

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. Sun, 21 Dec 1980 at 05:39 EDT (15,837 days ago) in Taurus

410.

Comet 19P/Borrelly passes perihelion Comet 19P/Borrelly makes its closest approach to the Sun. Sun, 21 Dec 1980 (15,837 days ago) in Cetus

411.

December solstice 21 December will be the shortest day of 1980 in the northern hemisphere. Sun, 21 Dec 1980 at 11:51 EDT (15,837 days ago) in Sagittarius

412.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 21 Dec 1980 at 13:07 EDT (15,837 days ago) in Orion

413.

Ursid meteor shower 1980 The Ursid meteor shower reaches its peak. Sun, 21 Dec 1980 (15,836 days ago) in Ursa Minor

414.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Mon, 22 Dec 1980 at 23:34 EDT (15,835 days ago) in Sagittarius

415.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Russia. Thu, 25 Dec 1980 at 22:30 EDT (15,833 days ago) in Leo

416.

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. Mon, 29 Dec 1980 at 01:32 EDT (15,829 days ago) in Virgo

417.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°19'. Mon, 29 Dec 1980 at 02:06 EDT (15,829 days ago) in Virgo

418.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°12'. Mon, 29 Dec 1980 at 03:12 EDT (15,829 days ago) in Virgo

419.

Close approach of the Moon, Jupiter and Saturn The Moon, Jupiter and Saturn pass close to one another. Mon, 29 Dec 1980 at 04:27 EDT (15,829 days ago) in Virgo

420.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Mon, 29 Dec 1980 at 04:46 EDT (15,829 days ago) in Virgo