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First-Quarter Moon Reaches About 50% Illumination on Oct. 29

The first-quarter moon is easy to see in the evening sky at roughly half illumination.

Overview

  • The lunar phase advanced from a waxing crescent on Oct. 28 to first quarter on Oct. 29, increasing from about 39–40% to around 50% illumination.
  • Vice cites Moongiant data placing the moon at roughly 7.37 days since the last new moon on Oct. 29, situating it a quarter of the way through the 29.5-day cycle.
  • NASA explains that at first quarter we see half of the moon’s sunlit side, with the moon rising around noon, visible through the evening, and setting near midnight.
  • Astrology coverage places the Oct. 29 first-quarter moon in Aquarius, following a Capricorn waxing crescent the day prior, with interpretations sourced to AstroSeek.
  • Observers can spot prominent maria with the naked eye, reveal more craters with binoculars, and use telescopes to target features such as Apollo landing sites, per NASA guidance, with the next full moon reported for Nov. 5.