Birthday signs · Virgo season
What zodiac sign is September 13?
September 13 occupies the sign of Virgo in the tropical zodiac. Over the 101 years from 1930 through 2030, the Sun occupied Virgo at noon UTC on September 13, at 19.73° to 21.22° Virgo. Day 21 or 22 of Virgo season is September 13, which lies in the late part with the element earth.
Calculated across 1930–2030 · checked .
September 13 is Virgo
| Virgo at noon UTC | 101 of 101 years, 1930–2030 |
|---|---|
| Nearest change of sign | at least 8 days away |
| Birth time needed for the sign | no |
September 13 at a glance
| Sign | ♍︎ Virgo, the Maiden |
|---|---|
| Element and mode | earth, mutable |
| Polarity | negative (feminine) |
| Ruler | Mercury (traditional) |
| Sun on this date | 19.7° to 21.2° Virgo at noon UTC, 1930–2030 |
| Day of the season | day 21 or 22 of Virgo season |
| Decan | second (10 years) and third (91); faces: Venus, Mercury |
| Sidereal sign (Lahiri) | Leo |
| Day number | 4 (modern numerology) |
Rulers: Ptolemy; modern list.6
The decan: late Virgo
| Noon Sun | 19.73° to 21.22° Virgo |
|---|---|
| Decans | second in 10 years, third in 91 |
| Decan line crossed | 20° |
| Face rulers, Chaldean order | Venus, Mercury |
Faces after Lilly, in Chaldean order.3
September 13 by the numbers
| Day number | 4 (1 + 3 = 4) |
|---|---|
| Month-day number | 4 (9 + 4 = 13, then 1 + 3 = 4) |
| System | modern numerology, digit sums |
Digit sums as numerology guides give them.4
Where the date falls in the season
| Day of Virgo season | 21 or 22 |
|---|---|
| Virgo season opened | August 23 (65 years) or August 24 (36) |
| Virgo season closed | September 21 (1 year) or September 22 (73) or September 23 (27) |
| Element and mode | earth, mutable |
| Traditional ruler | Mercury |
Seasons by the noon-UTC rule; rulers after Ptolemy.2
Born at this point in Virgo season
Born in the late stretch of Virgo, close to the point where the season turns toward Libra, this person knows how to check the details. Picture someone sending a final draft, then rereading it three times before letting it go. The careful eye is a real strength. It can also keep them standing at the door of a finished thing longer than the thing needs.
Interpretation, not prediction.
The sidereal sign
| Sidereal sign, Lahiri ayanamsa | Leo, all 101 years |
|---|---|
| Noon Sun, sidereal Leo | 26.2°–27.6° |
| Convention | Indian (Vedic) astrology |
Ayanamsa convention.5
Born on September 13
- Clara Schumann (1819–1896), German musician and composer
- Arnold Schoenberg (1874–1951), Austrian-Jewish American composer
- Claudette Colbert (1903–1996), American actress
- Roald Dahl (1916–1990), British writer and poet
- Óscar Arias (1940), President of Costa Rica (1986–1990, 2006–2010)
- Jacqueline Bisset (1944), English actress
- Salva Kiir (1951), President of South Sudan since 2011
- Thomas Müller (1989), German association football player
Birth dates checked on Wikidata.7
September 13 in history
Observed on this date:
- Day of the Programmer, during a non-leap year. (Russia)
- Día de los Niños Héroes (Mexico)
- Engineer's Day (Mauritius)
- Roald Dahl Day (Africa, United Kingdom, Latin America)
Events on September 13:
- 585 BCE: Lucius Tarquinius Priscus, king of Rome, celebrates a triumph for his victories over the Sabines, and the surrender of Collatia.
- 1743: Great Britain, Austria and the Kingdom of Sardinia sign the Treaty of Worms.
- 1899: Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m – 17,058 ft), the highest peak of Mount Kenya.
- 1956: The IBM 305 RAMAC is introduced, the first commercial computer to use disk storage.
- 2007: The McLaren F1 team are found guilty of possessing confidential information from the Ferrari team, fined $100 million, and excluded from the constructors' championship standings.
How the answer was worked out
Astronomy Engine was used to calculate the Sun's tropical longitude on September 13 at noon UTC for each year from 1930 through 2030, and each year's sign was read from the result.1 How the Machine works
Questions people also ask
What zodiac sign is September 13?
September 13 falls in Virgo in all 101 sampled years from 1930 to 2030, counting the Sun at noon UTC.
Is September 13 on a zodiac cusp?
No. Each September 13 from 1930 to 2030 shows the noon Sun in Virgo, and September 13 stands at least 8 days from the nearest change of sign.
What decan is September 13?
Two decans of Virgo contain September 13: the second, the face of Venus, holds 10 sampled years, and the third, the face of Mercury, holds 91.
What is the birthday number for September 13?
Digit addition is the method by which modern numerology determines day number 4 and month-day number 4 for September 13.
Sources
- Astronomy Engine JavaScript reference — Don Cross, Astronomy Engine. Verified .
- Ptolemy, Tetrabiblos, Book I — LacusCurtius, University of Chicago. Verified .
- Decan (astrology): the faces of the planets (after Lilly) — Wikipedia. Verified .
- Life Path Number — Numerology.com (practitioner site). Verified .
- Ayanamsa (Lahiri and other sidereal conventions) — Wikipedia. Verified .
- Virgo (astrology) — Wikipedia. Verified .
- Wikipedia: September 13 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .