1940 had 12 full moons and 5 eclipses. The eclipses fell: a penumbral lunar eclipse in Libra on March 23, an annular solar eclipse in Aries on April 7, a penumbral lunar eclipse in Scorpio on April 21, a total solar eclipse in Libra on October 1, and a penumbral lunar eclipse in Aries on October 16. Mercury turned retrograde three times (Mar 6 to Mar 28; Jul 8 to Aug 1; Oct 31 to Nov 20). The first full moon rose in Leo on January 24. Every full moon, new moon, solar and lunar eclipse, equinox, solstice, planetary ingress, and retrograde station below is computed to the millisecond with the NASA-cross-checked Swiss Ephemeris engine and shown in Eastern Time - Choose your location on the page for your own sky.
January 1940
- Last Quarter Moon in Libra
- Mars enters Aries
- Pallas Rx enters Cancer
- Mercury enters Capricorn
- New Moon in Capricorn
- First Quarter Moon in Aries
- Venus enters Pisces
- Ceres Retrograde
- Sun enters Aquarius
- Full Moon in Leo
- Mercury enters Aquarius
- Vesta enters Taurus
- Uranus Direct
- Last Quarter Moon in Scorpio
February 1940
- Juno enters Aries
- New Moon in Aquarius
- Mercury enters Pisces
- Venus enters Aries
- First Quarter Moon in Taurus
- Mars enters Taurus
- Sun enters Pisces
- Full Moon in Virgo
- Pallas Direct
- Last Quarter Moon in Sagittarius
March 1940
- Mercury enters Aries
- Mercury Retrograde
- Mercury Rx enters Pisces
- Venus enters Taurus
- New Moon in Pisces
- First Quarter Moon in Gemini
- Chiron Direct
- Saturn enters Taurus
- Sun enters Aries (Spring Equinox)
- Penumbral Lunar Eclipse (Full Moon) in Libra
- Mercury Direct
- Last Quarter Moon in Capricorn
April 1940
- Juno enters Taurus
- Mars enters Gemini
- Venus enters Gemini
- Annular Solar Eclipse (New Moon) in Aries
- Pluto Direct
- First Quarter Moon in Cancer
- Mercury enters Aries
- Vesta enters Gemini
- Ceres Direct
- Sun enters Taurus
- Pallas enters Leo
- Penumbral Lunar Eclipse (Full Moon) in Scorpio
- Last Quarter Moon in Aquarius
May 1940
- Venus enters Cancer
- Mercury enters Taurus
- New Moon in Taurus
- First Quarter Moon in Leo
- Jupiter enters Taurus
- Mars enters Cancer
- Sun enters Gemini
- Full Moon in Sagittarius
- Mercury enters Gemini
- Juno enters Gemini
- Last Quarter Moon in Pisces
June 1940
- Neptune Direct
- Mercury enters Cancer
- Venus Retrograde
- New Moon in Gemini
- First Quarter Moon in Virgo
- Full Moon in Sagittarius
- Sun enters Cancer (Summer Solstice)
- Mercury enters Leo
- Vesta enters Cancer
- Last Quarter Moon in Aries
July 1940
- Mars enters Leo
- Pallas enters Virgo
- New Moon in Cancer
- Venus Rx enters Gemini
- Mercury Retrograde
- First Quarter Moon in Libra
- Juno enters Cancer
- Venus Direct
- Full Moon in Capricorn
- Mercury Rx enters Cancer
- Sun enters Leo
- Ceres enters Libra
- Last Quarter Moon in Taurus
- Venus enters Cancer
August 1940
- Mercury Direct
- New Moon in Leo
- First Quarter Moon in Scorpio
- Mercury enters Leo
- Full Moon in Aquarius
- Mars enters Virgo
- Sun enters Virgo
- Last Quarter Moon in Gemini
- Saturn Retrograde
- Mercury enters Virgo
September 1940
- Uranus Retrograde
- New Moon in Virgo
- Jupiter Retrograde
- Juno enters Leo
- Vesta enters Leo
- Pallas enters Libra
- Venus enters Leo
- First Quarter Moon in Sagittarius
- Mercury enters Libra
- Full Moon in Pisces
- Sun enters Libra (Autumn Equinox)
- Last Quarter Moon in Cancer
- Chiron enters Leo
October 1940
- Total Solar Eclipse (New Moon) in Libra
- Mercury enters Scorpio
- Mars enters Libra
- Ceres enters Scorpio
- Venus enters Virgo
- First Quarter Moon in Capricorn
- Penumbral Lunar Eclipse (Full Moon) in Aries
- Sun enters Scorpio
- Last Quarter Moon in Leo
- New Moon in Scorpio
- Mercury Retrograde
November 1940
- Venus enters Libra
- Pluto Retrograde
- First Quarter Moon in Aquarius
- Chiron Retrograde
- Pallas enters Scorpio
- Full Moon in Taurus
- Juno enters Virgo
- Mars enters Scorpio
- Mercury Direct
- Sun enters Sagittarius
- Last Quarter Moon in Virgo
- Venus enters Scorpio
- New Moon in Sagittarius
December 1940
- First Quarter Moon in Pisces
- Mercury enters Sagittarius
- Ceres enters Sagittarius
- Full Moon in Gemini
- Venus enters Sagittarius
- Sun enters Capricorn (Winter Solstice)
- Last Quarter Moon in Libra
- Chiron Rx enters Cancer
- Vesta Retrograde
- New Moon in Capricorn
- Mercury enters Capricorn
- Neptune Retrograde
- Jupiter Direct
- Juno Retrograde