Birthdays · January

January 31 birthdayZodiac sign, famous birthdays, personality and your 2027 numbers

The short answer

January 31 is an Aquarius birthday in the second decan of Aquarius with birthday number 4 and a Personal Year 7 in 2027; Franz Schubert (1797), Justin Timberlake (1981) and Kenzaburō Ōe (1935) were born on January 31 too.

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January 31 zodiac sign: Aquarius

Sun sign: Aquarius
Sun at noon UTC: 10.5° to 11.9° Aquarius
Decan: Second of Aquarius, 10° to 20°
Element and mode: Air, fixed
Ruling planet: Uranus; Saturn by tradition

In every one of the 91 years from 1940 to 2030 the Sun stood in Aquarius for the whole of January 31, in every time zone on Earth, between 10.5° and 11.9° of the sign at noon UTC, so a January 31 birthday is an Aquarius birthday whatever the year or the hour.

At noon UTC on January 31 the Sun is in the second decan of Aquarius, 10° to 20°, in every one of those years, a face that belongs to Mercury in the Chaldean order and is read through Gemini, ruled by Mercury, by triplicity, so the two systems agree; in most years the decan runs from January 30 to February 8, and January 31 is its second day.

In most years January 31 is the 12th day of the Sun’s season in Aquarius, which runs from January 20 to February 18 counted at noon UTC, with 18 days of it still to come. January 31 is the 31st day of every year, with 334 days of the year still to come, or 335 in a leap year.

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Famous January 31 birthdays

The earliest born of the twelve is Tokugawa Ieyasu, in 1543, and the most recent Julián Alvarez, in 2000; four of them were born after 1949.

Born since 1950

Justin Timberlake (born 1981), American singer and actor
Preity Zinta (born 1975), Indian actress
Kerry Washington (born 1977), American actress
Julián Alvarez (born 2000), Argentine footballer

Born from 1900 to 1949

Kenzaburō Ōe (1935–2023), Japanese writer and Nobel Laureate
Rudolf Mössbauer (1929–2011), German nuclear physicist and Noble Prize in Physics
Philip Glass (born 1937), American composer

Born in the 1800s

Irving Langmuir (1881–1957), American chemist and physicist
Theodor Heuss (1884–1963), German journalist and politician
Theodore William Richards (1868–1928), United States chemist

Born before 1800

Franz Schubert (1797–1828), Austrian composer
Tokugawa Ieyasu (1543–1616), founder and first shogun of the Tokugawa shogunate of Japan

Birthdays from Wikidata, checked against Wikipedia’s “On this day” births: the twelve best known of the 73 people the Almanac’s table keeps for January 31, by how many Wikipedia editions cover them, with dates before the calendar reform as the sources give them.

January 31 birthday personality

Both systems give the middle of Aquarius to Mercury, so the old reading is the inventor’s mind, original and quick to see a system and how it could work better. Its lesson is that being right early is lonely unless it is said kindly.

The 31st adds 3 and 1 into 4, so numerology reads the creative and the independent settling into a builder’s discipline. It is a birthday linked with practical originality. In air the 4’s structure is read as system and order of thought, the planner who builds frameworks out of ideas.

A question to carry from January 31: what would your independence of mind build if you gave it one hour, every day, for a month?

The Sun in Aquarius and the number 4 are only part of the story: your Moon, your rising sign and the rest of your chart have as much to say, and the tradition offers all this as a mirror, never a verdict.

Birthday number 4

Born on the 31st, 3 + 1 = 4, so your birthday number is 4: a 4 vibration supports structure, discipline, foundations, work, and stability, with structure and reliability as its gift and rigidity, fear, or over-control as its strain.

Your 2027 numbers

A Greek sphinx with a lion's body, folded wings and a serene woman's face, seated on a stone plinth, an engraving — The Sphinx, keeper of riddles

For a birthday on January 31 the house method reduces the birth month and the day on their own and adds the Universal Year of 2027, 11 (2 + 0 + 2 + 7 = 11, a master number kept whole), as it stands: January, the 1st month, gives 1, the 31st reduces to 4, and 1 + 4 + 11 = 16, which reduces to 7, so 2027 is your Personal Year 7. On the way it passes 16, a karmic debt number, read in a year as a lesson to work through rather than as bad luck.

A Personal Year 7 is read as a year of reflection, study and rest, when the inner life asks for more room than the calendar. With 2027 a Universal Year 11 the tradition reads it as a year of real insight for anyone who makes time to be quiet.

Personal Months of 2027, a Personal Year 7: Jan 8 Feb 9 Mar 1 Apr 11 May 3 Jun 4 Jul 5 Aug 6 Sep 7 Oct 8 Nov 9 Dec 1

In 2027 January 31 falls on a Sunday, the day the old reckoning gives to the Sun, and is a Personal Day 3 (8 + 31 = 39, then 3) in a Personal Month 8 (7 + 1 = 8), while April is a master month 11; the Personal Year itself turns on 1 January, not on the birthday.

January birthstone and birth flower

Birthstone: Garnet
Birth flowers: Carnation, and snowdrop as the second flower

January’s garnet comes from the modern list (the Jewelers of America list of 1912, as since revised), and its carnation and snowdrop from The Old Farmer’s Almanac.

More birthdays

Common questions

What zodiac sign is January 31?

Aquarius: from 1940 to 2030 the Sun stayed in Aquarius for the whole of January 31 in every year and every time zone, 10.5° to 11.9° into the sign at noon UTC, so no birth year or birth time changes it.

Is January 31 a cusp birthday?

No: the Sun stays in Aquarius all day on January 31 in every year from 1940 to 2030, wherever on Earth the birth takes place, and the nearest cusp birthday is January 21, ten days earlier.

Who was born on January 31?

Among the best known people born on January 31 are Franz Schubert (1797–1828), Justin Timberlake (born 1981) and Kenzaburō Ōe (1935–2023), with Preity Zinta, Tokugawa Ieyasu and Irving Langmuir and six more named on this page.

What is the birthday number for January 31?

4. Born on the 31st, 3 + 1 = 4, so your birthday number is 4: a 4 vibration supports structure, discipline, foundations, work, and stability, with structure and reliability as its gift and rigidity, fear, or over-control as its strain.

What is the 2027 Personal Year for a January 31 birthday?

7. For a birthday on January 31 the house method reduces the birth month and the day on their own and adds the Universal Year of 2027, 11 (2 + 0 + 2 + 7 = 11, a master number kept whole), as it stands: January, the 1st month, gives 1, the 31st reduces to 4, and 1 + 4 + 11 = 16, which reduces to 7, so 2027 is your Personal Year 7. On the way it passes 16, a karmic debt number, read in a year as a lesson to work through rather than as bad luck.