Born on January 31

January 31 zodiac sign

If you were born on January 31, your Sun sign is Aquarius.

The water bearer, pouring something new into the depth of winter.

AirFixedUranus, traditionally Saturn

On January 31 the Sun stands between 9° and 12° Aquarius, in the 2nd decan of the sign.

Across all the years 1930 to 2050, the Sun was in Aquarius for the whole of January 31, wherever in the world you were born.

Find your exact Sun degree

Add your birth year, and your time and place if you know them. Hali will work out exactly where the Sun stood when you arrived, and when it next returns there.

Birth time

Your birthday star

Altair

The Sun reaches Altair on January 22 every year, 9 days before your birthday. The flying eagle, one of the brightest stars of the summer sky. A star for bold people who leap before they are sure they can fly.

Altair sits at 2° Aquarius.

The stars truly behind your Sun

On January 31 the Sun stands in front of the stars of Capricornus, the sea goat, even though the sign is Aquarius. Astrologers' signs follow the seasons, and over two thousand years the seasons have slipped about a whole sign against the stars.

See the real sky behind your whole chart

January 31 in every year from 1940 to 2025

The Sun is in Aquarius on January 31, but the Moon, Mercury and Venus keep moving. Open your decade to see where they were on your birthday. Times are Greenwich time (UTC), so if the Moon changed sign that day, your birth time and place decide which side of the line you were born on.

The 1940s
YearMoonMercuryVenus
1940ScorpioAquariusPisces
1941Pisces, then Aries from 16:02AquariusCapricorn
1942Cancer, then Leo from 10:37AquariusAquarius
1943SagittariusCapricorn, retrogradeAquarius
1944Aries, then Taurus from 11:07CapricornCapricorn
1945VirgoCapricornPisces
1946CapricornAquariusAquarius
1947Taurus, then Gemini from 11:52AquariusSagittarius
1948LibraAquariusPisces
1949PiscesAquarius, retrogradeCapricorn
The 1950s
YearMoonMercuryVenus
1950CancerCapricornAquarius
1951ScorpioCapricornAquarius
1952AriesCapricornCapricorn
1953Leo, then Virgo from 16:36AquariusPisces
1954Sagittarius, then Capricorn from 10:27AquariusAquarius
1955TaurusAquariusSagittarius
1956Virgo, then Libra from 06:56Aquarius, retrogradePisces
1957AquariusCapricornCapricorn
1958GeminiCapricornAquarius
1959Libra, then Scorpio from 00:06AquariusPisces
The 1960s
YearMoonMercuryVenus
1960PiscesAquariusCapricorn
1961LeoAquariusPisces
1962SagittariusAquarius, retrogradeAquarius
1963Aries, then Taurus from 12:55Capricorn, retrogradeSagittarius
1964VirgoCapricornPisces
1965Capricorn, then Aquarius from 15:18CapricornCapricorn
1966Taurus, then Gemini from 09:44AquariusAquarius
1967LibraAquariusPisces
1968Aquarius, then Pisces from 06:16AquariusCapricorn
1969CancerAquarius, retrogradePisces
The 1970s
YearMoonMercuryVenus
1970ScorpioCapricornAquarius
1971AriesCapricornSagittarius
1972LeoCapricornPisces
1973CapricornAquariusCapricorn
1974TaurusAquariusCapricorn
1975Virgo, then Libra from 03:14Aquarius, retrogradePisces
1976AquariusCapricorn, retrogradeCapricorn
1977Gemini, then Cancer from 15:20CapricornPisces
1978Libra, then Scorpio from 03:04CapricornAquarius
1979Pisces, then Aries from 18:12AquariusSagittarius
The 1980s
YearMoonMercuryVenus
1980Cancer, then Leo from 04:09AquariusPisces
1981SagittariusAquariusCapricorn
1982Aries, then Taurus from 17:04Aquarius, retrogradeCapricorn
1983VirgoCapricornPisces
1984Capricorn, then Aquarius from 23:11CapricornCapricorn
1985GeminiCapricornPisces
1986LibraAquariusAquarius
1987PiscesAquariusSagittarius
1988CancerAquariusPisces
1989Scorpio, then Sagittarius from 16:31Capricorn, retrogradeCapricorn
The 1990s
YearMoonMercuryVenus
1990AriesCapricornCapricorn
1991Leo, then Virgo from 15:44CapricornPisces
1992Sagittarius, then Capricorn from 01:08AquariusCapricorn
1993TaurusAquariusPisces
1994Virgo, then Libra from 05:34AquariusAquarius
1995AquariusAquarius, retrogradeSagittarius
1996Gemini, then Cancer from 21:11CapricornPisces
1997ScorpioCapricornCapricorn
1998Pisces, then Aries from 19:21CapricornCapricorn
1999LeoAquariusPisces
The 2000s
YearMoonMercuryVenus
2000SagittariusAquariusCapricorn
2001Aries, then Taurus from 14:22AquariusPisces
2002VirgoAquarius, retrogradeAquarius
2003Capricorn, then Aquarius from 12:45CapricornSagittarius
2004Taurus, then Gemini from 01:19CapricornPisces
2005LibraAquariusCapricorn
2006PiscesAquariusCapricorn
2007CancerAquariusPisces
2008Scorpio, then Sagittarius from 22:09Aquarius, retrogradeCapricorn
2009AriesCapricorn, retrogradePisces
The 2010s
YearMoonMercuryVenus
2010Leo, then Virgo from 13:23CapricornAquarius
2011CapricornCapricornSagittarius
2012TaurusAquariusPisces
2013Virgo, then Libra from 06:36AquariusCapricorn
2014AquariusAquariusCapricorn
2015Gemini, then Cancer from 07:09Aquarius, retrogradePisces
2016Libra, then Scorpio from 03:51CapricornCapricorn
2017Pisces, then Aries from 21:47CapricornPisces
2018LeoCapricornAquarius
2019SagittariusAquariusSagittarius
The 2020s
YearMoonMercuryVenus
2020AriesAquariusPisces
2021VirgoAquarius, retrogradeCapricorn
2022Capricorn, then Aquarius from 09:43Capricorn, retrogradeCapricorn
2023GeminiCapricornPisces
2024LibraCapricornCapricorn
2025PiscesAquariusPisces

Moon at midnight and the minute it changed sign, Mercury and Venus at noon, all Greenwich time. Your exact placements need your birth time and place. Find your exact Moon sign

Eclipses on January 31

Between 1930 and 2050, these eclipses fell on January 31, Greenwich time.

  • 1999, penumbral lunar eclipse at 16:17
  • 2018, total lunar eclipse at 13:29
  • 2037, total lunar eclipse at 14:00

How common is a January 31 birthday?

In US birth records from 1994 to 2014, an average of 10,883 babies were born on January 31 each year. That makes it number 279 of 366 birthdays, where 1 is the most common. That is 2% fewer than an average day.

See every birthday and sign ranked

More from our studies: The rarest rising sign, city by city · How rare is your Big Three? · Were you born with Mercury retrograde?

The Aquarius in you

Your gift

Originality. You see the world as it could be and invite others to see it too.

Your growing edge

Closeness. You care for everyone, and letting one person all the way in can be the harder task.

Your decan, the second part of Aquarius

Ruled by Mercury

Mercury lights up the mind. You are curious and quick, full of ideas, and your conversations wander into brilliant places.

Read about the second decan of Aquarius

Questions about January 31

What zodiac sign is January 31?

If you were born on January 31, your Sun sign is Aquarius.

Is January 31 a cusp birthday?

No. The Sun is in Aquarius all day on January 31 in every year between 1930 and 2050, so everyone born on this day is an Aquarius.

What is the birthday star for January 31?

The Sun reaches Altair on January 22 every year, 9 days before your birthday. The flying eagle, one of the brightest stars of the summer sky. A star for bold people who leap before they are sure they can fly.

What was the Moon sign on January 31?

It depends on the year, because the Moon changes sign about every two and a half days. On January 31 2025 the Moon was in Pisces, and on January 31 2024 it was in Libra. Find your year in the table above, and add your birth time for the exact sign.

What constellation is the Sun in on January 31?

On January 31 the Sun stands in front of the stars of Capricornus, the sea goat, even though the sign is Aquarius. Astrologers' signs follow the seasons, and over two thousand years the seasons have slipped about a whole sign against the stars.

Everything about AquariusExact Aquarius dates every yearAll birthdays

Your Sun sign is one star in a whole sky. Your Moon and rising sign tell the rest of your story.

See my birth chart