December 12 birthdayZodiac sign, famous birthdays, personality and your 2027 numbers
The short answer
December 12 is a Sagittarius birthday in the third decan of Sagittarius with birthday number 3 and a Personal Year 8 in 2027; Gustave Flaubert (1821), Frank Sinatra (1915) and Edvard Munch (1863) were born on December 12 too.
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December 12 zodiac sign: Sagittarius
- Sun sign
- Sagittarius
- Sun at noon UTC
- 19.6° to 21.0° Sagittarius
- Decan
- Third of Sagittarius, 20° to 30°
- Element and mode
- Fire, mutable
- Ruling planet
- Jupiter
In every one of the 91 years from 1940 to 2030 the Sun stood in Sagittarius for the whole of December 12, in every time zone on Earth, between 19.6° and 21.0° of the sign at noon UTC, so a December 12 birthday is a Sagittarius birthday whatever the year or the hour.
At noon UTC on December 12 the Sun is in the third decan of Sagittarius in 71 of those years and in the second in 20, so the decan, like the sign at a cusp, turns on the year. The third decan of Sagittarius is a face that belongs to Saturn in the Chaldean order and is read through Leo, ruled by the Sun, by triplicity, and in most years the decan runs from December 12 to December 21, and December 12 is its first day.
In most years December 12 is the 21st day of the Sun’s season in Sagittarius, which runs from November 22 to December 21 counted at noon UTC, with nine days of it still to come. December 12 is the 346th day of a common year and the 347th of a leap year, with 19 days of the year still to come after it.
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Famous December 12 birthdays
The earliest born of the twelve is Karl Bryullov, in 1799, and the most recent Michael Olise, in 2001; five of them were born after 1949.
Born since 1950
- Jennifer Connelly (born 1970), American actress
- Michael Olise (born 2001), French footballer
- Rajinikanth (born 1950), Indian actor
- Daniel Agger (born 1984), Danish association football player
- Mayim Bialik (born 1975), American actress, television personality, and author
Born from 1900 to 1949
- Frank Sinatra (1915–1998), American singer and actor
- Connie Francis (1937–2025), American singer and actress
Born in the 1800s
- Gustave Flaubert (1821–1880), French novelist
- Edvard Munch (1863–1944), Norwegian painter
- Alfred Werner (1866–1919), Swiss chemist Nobel laureate
- Edward G. Robinson (1893–1973), Romanian-American actor
Born before 1800
- Karl Bryullov (1799–1852), Russian painter
Birthdays from Wikidata, checked against Wikipedia’s “On this day” births: the twelve best known of the 49 people the Almanac’s table keeps for December 12, by how many Wikipedia editions cover them.
December 12 birthday personality
Saturn rules the last face of Sagittarius in the Chaldean scheme while Leo lends the Sun’s confidence, so belief is read here as conviction that has been tested: the teacher, the elder, the one whose principles have cost them something. Tradition warns against a certainty that stops listening.
The 12th joins 1 and 2 into 3, so numerology reads it as the self and the partner making something together, expression with a collaborator. Twelve is also the number of the months and the signs, which older symbolism took for a complete cycle. Fire turns the 3 toward celebration: the toast, the song, the first to laugh, and the reading asks only that the joy outlast the party.
A question to carry from December 12: what story would your hope tell if you trusted the people listening?
The Sun in Sagittarius and the number 3 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 3
Born on the 12th, 1 + 2 = 3, so your birthday number is 3: a 3 vibration supports creativity, communication, joy, and expressive movement, with creative communication as its gift and scattered focus, avoidance, or emotional dramatization as its strain.
Your 2027 numbers
For a birthday on December 12 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: December, the 12th month, reduces to 3, the 12th reduces to 3, and 3 + 3 + 11 = 17, which reduces to 8, so 2027 is your Personal Year 8.
A Personal Year 8 is read as a year of effort and reward, of money, authority and the harvest of earlier work. Under the Universal Year 11 the reading asks that power be used in the service of a vision worth having.
Personal Months of 2027, a Personal Year 8: Jan 9 Feb 1 Mar 11 Apr 3 May 4 Jun 5 Jul 6 Aug 7 Sep 8 Oct 9 Nov 1 Dec 2
In 2027 December 12 falls on a Sunday, the day the old reckoning gives to the Sun, and is a Personal Day 5 (2 + 12 = 14, then 5) in a Personal Month 2 (8 + 12 = 20, then 2), while March is a master month 11; the Personal Year itself turns on 1 January, not on the birthday.
December birthstone and birth flower
- Birthstones
- Turquoise, tanzanite and zircon
- Birth flowers
- Narcissus, and holly as the second flower
December’s turquoise, tanzanite and zircon come from the modern list (the Jewelers of America list of 1912, as since revised), and its narcissus and holly from The Old Farmer’s Almanac.
More birthdays
Common questions
What zodiac sign is December 12?
Sagittarius: from 1940 to 2030 the Sun stayed in Sagittarius for the whole of December 12 in every year and every time zone, 19.6° to 21.0° into the sign at noon UTC, so no birth year or birth time changes it.
Is December 12 a cusp birthday?
No: the Sun stays in Sagittarius all day on December 12 in every year from 1940 to 2030, wherever on Earth the birth takes place, and the nearest cusp birthday is December 21, nine days later.
Who was born on December 12?
Among the best known people born on December 12 are Gustave Flaubert (1821–1880), Frank Sinatra (1915–1998) and Edvard Munch (1863–1944), with Jennifer Connelly, Alfred Werner and Michael Olise and six more named on this page.
What is the birthday number for December 12?
3. Born on the 12th, 1 + 2 = 3, so your birthday number is 3: a 3 vibration supports creativity, communication, joy, and expressive movement, with creative communication as its gift and scattered focus, avoidance, or emotional dramatization as its strain.
What is the 2027 Personal Year for a December 12 birthday?
8. For a birthday on December 12 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: December, the 12th month, reduces to 3, the 12th reduces to 3, and 3 + 3 + 11 = 17, which reduces to 8, so 2027 is your Personal Year 8.
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