IAAS

The International Association for Astronomical Studies

December 2025
At-A-Glance

 IAAS
SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY
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  • The Moon passes 5° north of Uranus
    		•  4
  • The Moon is at perigee (221,806 miles from Earth)
  • Full Moon
    		•  5
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    7
  • The Moon passes 4° north of Jupiter
  • Mercury is at greatest western elongation (21° )
  • Asteroid Psyche is at opposition
    		•  8
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  • The Moon passes 0.7° north of Regulus
  • Neptune is stationary
    		•  11
  • Last Quarter Moon
    		•  12
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  • Geminid meteor shower peaks
    		•  15

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  • Asteroid Juno is in conjunction with the Sun
  • The Moon is at apogee (252,477 miles from Earth)
    		•  18
  • The Moon passes 6° south of Mercury
  • The Moon passes 0.4° south of Antares
  • Mercury passes 6° north of Antares
    		•  19
  • New Moon
    		•  20
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    21
  • Winter solstice occurs at 10:03 A.M. EST
    		•  22
  • The Moon passes 0.6° north of Pluto
    		•  23
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  • The Moon passes 4° north of Saturn
    		•  27
  • The Moon passes 3° north of Neptune
  • First Quarter Moon
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  • The Moon passes 5° north of Uranus
    		•       

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    last modified: December 01, 2025