The Moon

Moon calendar for May 2025

May 2025 has 4 principal Moon phases, 14 Moon sign changes and 13 void-of-course periods. Each is listed below with its exact time.

What the phases and Moon signs mean

Times in Eastern Time (ET)

Thursday, May 1

  • The Moon enters Cancer; the void of course ends

Saturday, May 3

  • The Moon goes void of course in Cancer
  • The Moon enters Leo; the void of course ends

Sunday, May 4

  • First quarter Moon in Leo

Monday, May 5

  • The Moon goes void of course in Leo
  • The Moon enters Virgo; the void of course ends

Thursday, May 8

  • The Moon goes void of course in Virgo
  • The Moon enters Libra; the void of course ends

Saturday, May 10

  • The Moon goes void of course in Libra
  • The Moon enters Scorpio; the void of course ends

Monday, May 12

  • Full Moon in Scorpio

Tuesday, May 13

  • The Moon goes void of course in Scorpio
  • The Moon enters Sagittarius; the void of course ends

Thursday, May 15

  • The Moon goes void of course in Sagittarius
  • The Moon enters Capricorn; the void of course ends

Sunday, May 18

  • The Moon goes void of course in Capricorn
  • The Moon enters Aquarius; the void of course ends

Tuesday, May 20

  • The Moon goes void of course in Aquarius
  • Last quarter Moon in Aquarius
  • The Moon enters Pisces; the void of course ends

Thursday, May 22

  • The Moon goes void of course in Pisces
  • The Moon enters Aries; the void of course ends

Saturday, May 24

  • The Moon goes void of course in Aries
  • The Moon enters Taurus; the void of course ends

Sunday, May 25

  • The Moon goes void of course in Taurus

Monday, May 26

  • The Moon enters Gemini; the void of course ends
  • New Moon in Gemini

Wednesday, May 28

  • The Moon goes void of course in Gemini
  • The Moon enters Cancer; the void of course ends

Friday, May 30

  • The Moon goes void of course in Cancer
  • The Moon enters Leo; the void of course ends

How these times are computed

Every time here comes from our own engine, built on astronomy-engine, an open-source ephemeris, and checked against independent references: the U.S. Naval Observatory's Moon phases, NASA's eclipse canon and Swiss Ephemeris outputs. The page is written in Eastern Time (ET); your browser shows the times in the zone you pick.

Void of course, traditional rule: from the Moon's last exact major aspect (conjunction, sextile, square, trine or opposition) to the Sun, Mercury, Venus, Mars, Jupiter or Saturn, until it enters the next sign. The modern rule also counts Uranus, Neptune and Pluto, so its voids can begin later and run shorter.

Astrology is a symbolic language, not a science: the positions are exact, and what they mean is interpretation.

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