IAAS

The International Association for Astronomical Studies

September 2026
At-A-Glance

IAAS
SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY
    1
2
  • Venus passes 1.7° south of Spica
  • 3
  • The Moon passes 5° north of Uranus
  • 4
  • Last Quarter Moon
  • 5
    6
  • The Moon passes 3° north of Mars
  • The Moon is at perigee (228,825 miles from Earth)
  • 7
    8
  • The Moon passes 0.8° north of Jupiter
  • 9
  • The Moon passes 0.6° south of Regulus
  • 10
  • Uranus is stationary
  • New Moon
  • 11
    12
    13
    14
  • Asteroid Juno is stationary
  • The Moon passes 0.5° north of Venus
  • 15
    16
    17
  • The Moon passes 0.6° south of Antares
  • 18
  • First Quarter Moon
  • Venus is at greatest brilliancy (magnitude -4.8)
  • The Moon is at apogee (251,171 miles from Earth)
  • Mars passes 6° south of Pollux
  • 19
    20
    21
    22
  • Autumnal equinox occurs at 8:05 P.M. EDT
  • 23
    24
    25
  • Mercury passes 1.0° north of Spica
  • Neptune is at opposition
  • 26
  • Full Moon
  • The Moon passes 5° north of Neptune
  • 27
  • The Moon passes 7° north of Saturn
  • 28
    29
    30
  • Asteroid Nausikaa is at opposition
  • The Moon passes 5° north of Uranus
  •      

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    last modified: September 01, 2026