Astronomy Calendar

• 1
  The cluster Messier 41 is well placed  Remind MeThe open star cluster M41 (NGC 2287; mag 4.5) in Canis Major culminates at around midnight local time.
• 2
  Asteroid 14 Irene at opposition  Remind MeAsteroid 14 Irene makes closest approach to the Earth.
• 3
  Conjunction of the Moon and Venus  Remind MeThe Moon and Venus share the same right ascension, at a separation of 1°26'.
  Quadrantid meteor shower 2025  Remind MeThe Quadrantid meteor shower reaches its peak.
  Close approach of the Moon and Venus  Remind MeThe Moon and Venus pass close to each other.
• 4
  The Earth at perihelion  Remind MeThe Earth reaches its closest point to the Sun.
  Close approach of the Moon and Saturn  Remind MeThe Moon and Saturn pass close to each other.
  Lunar occultation of Saturn  Remind MeThe Moon will pass in front of Saturn, creating a lunar occultation visible from Africa, Europe, Greenland, Russia, Corsica, Guernsey, Menorca, Mallorca, Ibiza, Isla de Alborán, Melilla, Islas Chafarinas, Shetland, Orkney and Northern Ireland.
  Conjunction of the Moon and Saturn  Remind MeThe Moon and Saturn share the same right ascension, at a separation of 40'.
• 5
  Lunar occultation of Neptune  Remind MeThe Moon will pass in front of Neptune, creating a lunar occultation visible from Russia and Svalbard.
• 6
  Moon at First Quarter  Remind MeThe Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight.
• 7
  The Moon at perigee  Remind MeThe Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month.
• 9
  Close approach of the Moon and M45  Remind MeThe Moon and M45 pass close to each other.
• 10
  Venus at greatest elongation east  Remind MeVenus is bright and well placed in the evening sky.
  Close approach of the Moon and Jupiter  Remind MeThe Moon and Jupiter pass close to each other.
  Conjunction of the Moon and Jupiter  Remind MeThe Moon and Jupiter share the same right ascension, at a separation of 5°25'.
• 11
  Lunar occultation of Beta Tauri  Remind MeThe Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from Asia, Australia and New Zealand, Papua New Guinea, Seychelles, British Indian Ocean Territory, Spratly Islands and Paracel Islands.
  Venus at dichotomy  Remind MeVenus reaches half phase in the evening sky.
• 12
  Mars at perigee  Remind MeMars reaches its closest point to the Earth – marking the best time to observe it in 1970.
• 13
  Asteroid 887 Alinda at opposition  Remind MeAsteroid 887 Alinda makes closest approach to the Earth.
  Comet C/2024 G3 (ATLAS) passes perigee  Remind MeComet C/2024 G3 (ATLAS) makes its closest approach to the Earth.
  Comet C/2024 G3 (ATLAS) passes perihelion  Remind MeComet C/2024 G3 (ATLAS) makes its closest approach to the Sun.
  Full Moon  Remind MeThe Moon reaches full phase and is visible for much of the night.
  Conjunction of the Moon and Mars  Remind MeThe Moon and Mars share the same right ascension, at a separation of 13'.
  Close approach of the Moon and Mars  Remind MeThe Moon and Mars pass close to each other.
  Lunar occultation of Mars  Remind MeThe Moon will pass in front of Mars, creating a lunar occultation visible from Africa, the Americas, Portugal, the Portuguese Azores, Madeira, the Savage Islands and the Canary Islands.
• 14
  The Moon at aphelion  Remind MeThe Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon.
  The cluster Messier 47 is well placed  Remind MeThe open star cluster M47 (NGC 2422; mag 4.4) in Puppis culminates at around midnight local time.
  NGC 2403 is well placed  Remind MeNGC 2403 (mag 8.9), a spiral galaxy in Camelopardalis culminates at around midnight local time.
• 15
  Mars at opposition  Remind MeMars lies in the opposite direction to the Sun in the sky, making it closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night.
• 16
  The cluster NGC 2451 is well placed  Remind MeThe open star cluster NGC 2451 (mag 2.8) in Puppis culminates at around midnight local time.
• 18
  Close approach of Venus and Saturn  Remind MeVenus and Saturn pass within 2°10' of each other.
• 19
  γ-Ursae Minorid meteor shower 2025  Remind MeThe γ-Ursae Minorid meteor shower reaches its peak.
  Mercury at aphelion  Remind MeMercury passes the furthest point along its orbit from the Sun.
  Conjunction of Venus and Saturn  Remind MeVenus and Saturn share the same right ascension, at a separation of 2°31'.
• 20
  The cluster NGC 2516 is well placed  Remind MeThe open star cluster NGC 2516 (mag 3.8) in Volans culminates at around midnight local time.
  Lunar occultation of Spica  Remind MeThe Moon will pass in front of Spica (Alpha Virginis), creating a lunar occultation visible from Africa.
  The Moon at apogee  Remind MeThe Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month.
  134340 Pluto at solar conjunction  Remind Me134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next.
  Moon at Last Quarter  Remind MeThe Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise.
• 23
  The cluster NGC 2547 is well placed  Remind MeThe open star cluster NGC 2547 (mag 4.7) in Vela culminates at around midnight local time.
• 24
  Lunar occultation of Antares  Remind MeThe Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Madagascar, Maldives, Mauritius and Reunion amongst others.
• 27
  The Moon at perihelion  Remind MeThe Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon.
• 29
  New Moon  Remind MeThe Moon disappears into the Sun's glare for a few days.
• 30
  Uranus ends retrograde motion  Remind MeUranus returns to its usual eastward motion after opposition.
  The Beehive cluster is well placed  Remind MeThe Beehive open star cluster (M44, NGC 2632, also known as Praesepe; mag 3.1) culminates at around midnight local time.
  The Omicron Velorum cluster is well placed  Remind MeThe Omicron Velorum open star cluster (IC 2391; mag 2.5) in Vela culminates at around midnight local time.
• 31
  The cluster IC 2395 is well placed  Remind MeThe open star cluster IC 2395 (mag 4.0) in Vela culminates at around midnight local time.
  Close approach of the Moon and Saturn  Remind MeThe Moon and Saturn pass close to each other.
  Lunar occultation of Saturn  Remind MeThe Moon will pass in front of Saturn, creating a lunar occultation visible from Russia.
  Conjunction of the Moon and Saturn  Remind MeThe Moon and Saturn share the same right ascension, at a separation of 1°05'.