January 2021
Jan 2-3: Quadrantids meteor shower
Jan 13: New moon phase
Jan 24: Mercury at greatest eastern elongation
Jan 28: Full moon phase (Wolf Moon)
February 2021
Feb 11: New moon phase
Feb 18: NASA Perseverance Mars landing (Jezero Crater)
Feb 27: Full moon phase (Snow Moon)
Feb TBA: China Tianwen-1 Mars landing (Utopia Planitia)
March 2021
Mar 6: Mercury at greatest western elongation
Mar 13: New moon phase
Mar 20: Vernal (N) | autumnal (S) equinox (09:27 UTC)
Mar 20: Venus at greatest eastern elongation
Mar 28: Full moon phase (Worm Moon)
April 2021
Apr 8: Full (super)moon phase (Pink Moon)
Apr 12: New moon phase
Apr 22-23: Lyrid meteors
May 2021
May 6-7: Eta Aquarid meteors
May 11: New moon phase
May 17: Mercury at greatest eestern elongation
May 26: Total lunar eclipse NASA eclipse map
May 26: Full (super)moon phase (Flower Moon)
June 2021
Jun 10: New moon phase
Jun 10: Annular solar eclipse NASA eclipse map
Jun 21: Summer (N) | winter (S) solstice(03:21 UTC)
Jun 24: Full (super)moon phase (Strawberry Moon)
July 2021
Jul 4: Mercury at greatest eastern elongation
Jul 10: New moon phase
Jul 24: Full moon phase (Buck Moon)
Jul 28-29: Delta Aquarids meteors
August 2021
Aug 2: Saturn at opposition
Aug 8: New moon phase
Aug 12-13: Perseid meteors
Aug 19: Jupiter at opposition
Aug 22: Full moon phase (Blue Moon)
September 2021
Sep 7: New moon phase
Sep 14: Neptune at opposition
Sep 14: Mercury at greatest eastern elongation
Sep 20: Full moon phase (Harvest Moon)
Sep 22: Autumnal (N) | vernal (S) equinox(19:11 UTC)
October 2021
Oct 6: New moon phase
Oct 7: Draconids meteors
Oct 16: NASA “Lucy” launch to multiple Jovian Trojan asteroids
Oct 20: Full moon phase (Hunters Moon)
Oct 21-22: Orionid meteors
Oct 25: Mercury at greatest western elongation
Oct 31: James Webb Space Telescope launch
November 2021
Nov 4: New moon phase
Nov 4-5: Taurids meteors
Nov 5: Uranus at opposition
Nov 17-18: Leonid meteors
Nov 19: Full moon phase (Beaver Moon)
Nov 19: Partial lunar eclipse NASA eclipse map
December 2021
Dec 4: Total solar eclipse NASA eclipse map
Dec 4: New moon phase
Dec 13-14: Geminid meteors
Dec 19: Full moon phase (Cold moon)
Dec 21: Winter (N) | summer (S) solstice (15:50 UTC)
Dec 21-22: Ursid meteors