Birthdays · September

September 13 birthdayZodiac sign, famous birthdays, personality and your 2027 numbers

The short answer

September 13 is a Virgo birthday in the third decan of Virgo with birthday number 4 and a Personal Year 6 in 2027; Roald Dahl (1916), Thomas Müller (1989) and Claudette Colbert (1903) were born on September 13 too.

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September 13 zodiac sign: Virgo

Sun sign

Virgo

Sun at noon UTC

19.8° to 21.2° Virgo

Decan

Third of Virgo, 20° to 30°

Element and mode

Earth, mutable

Ruling planet

Mercury

In every one of the 91 years from 1940 to 2030 the Sun stood in Virgo for the whole of September 13, in every time zone on Earth, between 19.8° and 21.2° of the sign at noon UTC, so a September 13 birthday is a Virgo birthday whatever the year or the hour.

At noon UTC on September 13 the Sun is in the third decan of Virgo in 85 of those years and in the second in 6, so the decan, like the sign at a cusp, turns on the year. The third decan of Virgo is a face that belongs to Mercury in the Chaldean order and is read through Taurus, ruled by Venus, by triplicity, and in most years the decan runs from September 13 to September 22, and September 13 is its first day.

In most years September 13 is the 22nd day of the Sun’s season in Virgo, which runs from August 23 to September 22 counted at noon UTC, with nine days of it still to come. September 13 is the 256th day of a common year and the 257th of a leap year, with 109 days of the year still to come after it.

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Famous September 13 birthdays

The earliest born of the twelve is Cesare Borgia, in 1475, and the most recent Thomas Müller, in 1989; two of them were born after 1949.

Born since 1950

• Thomas Müller (born 1989), German association football player
• Dave Mustaine (born 1961), American musician

Born from 1900 to 1949

• Roald Dahl (1916–1990), British writer and poet
• Claudette Colbert (1903–1996), American actress
• Jacqueline Bisset (born 1944), English actress
• Maurice Jarre (1924–2009), French composer and conductor

Born in the 1800s

• Arnold Schoenberg (1874–1951), Austrian-Jewish American composer
• Clara Schumann (1819–1896), German musician and composer
• Marie von Ebner-Eschenbach (1830–1916), Austrian writer
• Sherwood Anderson (1876–1941), American writer
• Leopold Ružička (1887–1976), Croatian scientist

Born before 1800

• Cesare Borgia (1475–1507), Duke of Romagna and former Catholic cardinal

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 September 13, by how many Wikipedia editions cover them, with dates before the calendar reform as the sources give them.

September 13 birthday personality

Mercury rules the last ten degrees of its own sign in the Chaldean order and Taurus lends its steadiness by triplicity, so this is read as Virgo the craftsman, the hand that improves a thing a little every day. Tradition prizes its reliability and warns against mistaking the detail for the whole.

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 earth, the 4 is read as the long, steady build, each stone laid level so that the next can rest on it.

A question to carry from September 13: which small daily habit would give your care for doing things well the ground it needs?

The Sun in Virgo 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 September 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: September, the 9th month, gives 9, the 13th reduces to 4, and 9 + 4 + 11 = 24, which reduces to 6, so 2027 is your Personal Year 6.

A Personal Year 6 is read as a year of home, family and responsibility, of love that shows itself in care. Under the Universal Year 11 the reading turns that care toward healing and toward a community wider than the household.

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

In 2027 September 13 falls on a Monday, the day the old reckoning gives to the Moon, and is a Personal Day 1 (6 + 13 = 19, then 1) in a Personal Month 6 (6 + 9 = 15, then 6), while May is a master month 11; the Personal Year itself turns on 1 January, not on the birthday.

September birthstone and birth flower

Birthstone

Sapphire

Birth flowers

Aster, and morning glory as the second flower

September’s sapphire comes from the modern list (the Jewelers of America list of 1912, as since revised), and its aster and morning glory from The Old Farmer’s Almanac.

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