December 13 birthdayZodiac sign, famous birthdays, personality and your 2027 numbers
The short answer
December 13 is a Sagittarius birthday in the third decan of Sagittarius with birthday number 4 and a Personal Year 9 in 2027; Taylor Swift (1989), Heinrich Heine (1797) and Henry IV of France (1553) were born on December 13 too.
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December 13 zodiac sign: Sagittarius
- Sun sign
- Sagittarius
- Sun at noon UTC
- 20.6° to 22.0° 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 13, in every time zone on Earth, between 20.6° and 22.0° of the sign at noon UTC, so a December 13 birthday is a Sagittarius birthday whatever the year or the hour.
At noon UTC on December 13 the Sun is in the third decan of Sagittarius, 20° to 30°, in every one of those years, a face that belongs to Saturn in the Chaldean order and is read through Leo, ruled by the Sun, by triplicity; in most years the decan runs from December 12 to December 21, and December 13 is its second day.
In most years December 13 is the 22nd day of the Sun’s season in Sagittarius, which runs from November 22 to December 21 counted at noon UTC, with eight days of it still to come. December 13 is the 347th day of a common year and the 348th of a leap year, with 18 days of the year still to come after it.
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Famous December 13 birthdays
The earliest born of the twelve is Pope Sixtus V, in 1521, and the most recent Taylor Swift, in 1989; five of them were born after 1949.
Born since 1950
- Taylor Swift (born 1989), American singer-songwriter
- Jamie Foxx (born 1967), American actor, comedian, and singer
- Steve Buscemi (born 1957), American actor
- Amy Lee (born 1981), American singer, pianist and songwriter
- Santi Cazorla (born 1984), Spanish association football player
Born from 1900 to 1949
- Christopher Plummer (1929–2021), Canadian actor
- Philip W. Anderson (1923–2020), American physicist
- Talcott Parsons (1902–1979), American sociologist
Born in the 1800s
- Werner von Siemens (1816–1892), German electrical engineer, inventor and industrialist
Born before 1800
- Heinrich Heine (1797–1856), German poet, writer and literary critic
- Henry IV of France (1553–1610), King of Navarre from 1572 to 1610
- Pope Sixtus V (1521–1590), pope of the Catholic Church from 1585 to 1590
Birthdays from Wikidata, checked against Wikipedia’s “On this day” births: the twelve best known of the 35 people the Almanac’s table keeps for December 13, by how many Wikipedia editions cover them, with dates before the calendar reform as the sources give them.
December 13 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 13th reduces to 4, and modern numerology counts 13 among its karmic debt numbers: a symbolic lesson about steady, honest work, which the Almanac reads as a pattern of growth and never as punishment or bad luck. The 4 underneath it is the builder’s number. With fire, the 4 is read as willpower given a routine, ambition that gets up early and does the unglamorous part.
A question to carry from December 13: which small daily habit would give your hope the ground it needs?
The Sun in Sagittarius 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, through 13
Born on the 13th, 1 + 3 = 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. The day itself, 13, is one of the four karmic debt numbers, 13, 14, 16 and 19, a flag raised only for a number’s own total, and the Almanac reads it as a lesson to grow through, never as a punishment or a curse.
Your 2027 numbers
For a birthday on December 13 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 13th reduces to 4, and 3 + 4 + 11 = 18, which reduces to 9, so 2027 is your Personal Year 9.
A Personal Year 9 is read as a year of completion and release, when a nine-year round closes and makes room for the next. In a Universal Year 11 the tradition reads the endings as clearing the way for something more inspired.
Personal Months of 2027, a Personal Year 9: Jan 1 Feb 11 Mar 3 Apr 4 May 5 Jun 6 Jul 7 Aug 8 Sep 9 Oct 1 Nov 2 Dec 3
In 2027 December 13 falls on a Monday, the day the old reckoning gives to the Moon, and is a Personal Day 7 (3 + 13 = 16, then 7) in a Personal Month 3 (9 + 12 = 21, then 3), while February 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 13?
Sagittarius: from 1940 to 2030 the Sun stayed in Sagittarius for the whole of December 13 in every year and every time zone, 20.6° to 22.0° into the sign at noon UTC, so no birth year or birth time changes it.
Is December 13 a cusp birthday?
No: the Sun stays in Sagittarius all day on December 13 in every year from 1940 to 2030, wherever on Earth the birth takes place, and the nearest cusp birthday is December 21, eight days later.
Who was born on December 13?
Among the best known people born on December 13 are Taylor Swift (born 1989), Heinrich Heine (1797–1856) and Henry IV of France (1553–1610), with Christopher Plummer, Jamie Foxx and Pope Sixtus V and six more named on this page.
What is the birthday number for December 13?
4. Born on the 13th, 1 + 3 = 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 December 13 birthday?
9. For a birthday on December 13 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 13th reduces to 4, and 3 + 4 + 11 = 18, which reduces to 9, so 2027 is your Personal Year 9.
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