The Moon

Moon calendar for August 2025

August 2025 has 5 principal Moon phases, 13 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)

Friday, August 1

  • First quarter Moon in Scorpio

Saturday, August 2

  • The Moon goes void of course in Scorpio

Sunday, August 3

  • The Moon enters Sagittarius; the void of course ends

Tuesday, August 5

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

Wednesday, August 6

  • The Moon goes void of course in Capricorn

Thursday, August 7

  • The Moon enters Aquarius; the void of course ends

Saturday, August 9

  • The Moon goes void of course in Aquarius
  • Full Moon in Aquarius

Sunday, August 10

  • The Moon enters Pisces; the void of course ends

Monday, August 11

  • The Moon goes void of course in Pisces

Tuesday, August 12

  • The Moon enters Aries; the void of course ends

Wednesday, August 13

  • The Moon goes void of course in Aries

Thursday, August 14

  • The Moon enters Taurus; the void of course ends

Saturday, August 16

  • The Moon goes void of course in Taurus
  • Last quarter Moon in Taurus
  • The Moon enters Gemini; the void of course ends

Monday, August 18

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

Wednesday, August 20

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

Thursday, August 21

  • The Moon goes void of course in Leo

Saturday, August 23

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

Monday, August 25

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

Tuesday, August 26

  • The Moon goes void of course in Libra

Wednesday, August 27

  • The Moon enters Scorpio; the void of course ends

Friday, August 29

  • The Moon goes void of course in Scorpio

Saturday, August 30

  • The Moon enters Sagittarius; the void of course ends

Sunday, August 31

  • First quarter Moon in Sagittarius

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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