Birthday signs · Sagittarius season
What zodiac sign is December 11?
In the tropical zodiac, December 11 is Sagittarius. Each noon UTC on December 11 in the 101 years from 1930 through 2030 finds the Sun in Sagittarius, at 18.49° to 19.98° Sagittarius. In the middle part of Sagittarius season, day 19 or 20 is December 11, with the element fire.
Calculated across 1930–2030 · checked .
December 11 is Sagittarius
| Sagittarius at noon UTC | 101 of 101 years, 1930–2030 |
|---|---|
| Nearest change of sign | at least 9 days away |
| Birth time needed for the sign | no |
December 11 at a glance
| Sign | ♐︎ Sagittarius, the Archer |
|---|---|
| Element and mode | fire, mutable |
| Polarity | positive (masculine) |
| Ruler | Jupiter (traditional) |
| Sun on this date | 18.5° to 20° Sagittarius at noon UTC, 1930–2030 |
| Day of the season | day 19 or 20 of Sagittarius season |
| Decan | second (10°–20°), face of the Moon |
| Sidereal sign (Lahiri) | Scorpio |
| Day number | 11 (modern numerology) |
Rulers: Ptolemy; modern list.6
The decan: middle Sagittarius
| Noon Sun | 18.49° to 19.98° Sagittarius |
|---|---|
| Decan | second (10°–20°) |
| Face ruler, Chaldean order | the Moon |
Faces after Lilly, in Chaldean order.3
December 11 by the numbers
| Day number | 11 () |
|---|---|
| Month-day number | 5 (3 + 11 = 14, then 1 + 4 = 5) |
| System | modern numerology, digit sums |
Digit sums as numerology guides give them.4
Where the date falls in the season
| Day of Sagittarius season | 19 or 20 |
|---|---|
| Sagittarius season opened | November 22 (48 years) or November 23 (53) |
| Sagittarius season closed | December 20 (5 years) or December 21 (82) or December 22 (14) |
| Element and mode | fire, mutable |
| Traditional ruler | Jupiter |
Seasons by the noon-UTC rule; rulers after Ptolemy.2
Born at this point in Sagittarius season
Born on December 11, this person sits in the middle stretch of Sagittarius, where the season's restless curiosity is already warm but not yet spent. They light up at the idea of a distant trip or a bold plan, and they can talk a room into believing in it. The harder moment comes when a new idea arrives before the last one is finished. Owning that pattern, and telling people plainly when a change of direction is coming, turns restlessness into something others can trust.
Interpretation, not prediction.
The sidereal sign
| Sidereal sign, Lahiri ayanamsa | Scorpio, all 101 years |
|---|---|
| Noon Sun, sidereal Scorpio | 25°–26.3° |
| Convention | Indian (Vedic) astrology |
Ayanamsa convention.5
Born on December 11
- Hector Berlioz (1803–1869), French composer and conductor
- Alfred de Musset (1810–1857), French writer
- Robert Koch (1843–1910), German physician, bacteriologist
- Max Born (1882–1970), German-Jewish physicist and mathematician
- Naguib Mahfouz (1911–2006), Egyptian writer
- Aleksandr Solzhenitsyn (1918–2008), Russian writer, publicist, poet and politician
- John Kerry (1943), American politician and diplomat
- Viswanathan Anand (1969), Indian chess grandmaster
Birth dates checked on Wikidata.7
December 11 in history
Observed on this date:
- Establishment of Kurdish Women's Union (Iraqi Kurdistan)
- Indiana Day (United States)
- International Mountain Day
- National Tango Day (Argentina)
- Pampanga Day (Pampanga province, Philippines)
- Republic Day, the day when Upper Volta became an autonomous republic in the French Community in 1958. (Burkina Faso)
Events on December 11:
- 220: Emperor Xian of Han is forced to abdicate the throne by Cao Cao's son Cao Pi, ending the Han dynasty.
- 1816: Indiana becomes the 19th U.S. state.
- 1934: Bill Wilson, co-founder of Alcoholics Anonymous, takes his last drink and enters treatment for the final time.
- 1990: Demonstrations by students and workers across Albania begin, which eventually trigger the fall of communism in Albania.
- 2020: The Food and Drug Administration issues an Emergency Use Authorization on the Pfizer–BioNTech COVID-19 vaccine, the first COVID-19 vaccine to be approved by the agency.
How the answer was worked out
The Sun's tropical longitude on December 11 at noon UTC was calculated with Astronomy Engine for each year from 1930 through 2030, and the sign of each year was read from it.1 How the Machine works
Questions people also ask
What zodiac sign is December 11?
Among 101 sampled years from 1930 to 2030, December 11 is Sagittarius in every case, counting the Sun at noon UTC.
Is December 11 on a zodiac cusp?
No. The noon position of the Sun was Sagittarius on every December 11 from 1930 to 2030, with December 11 at least 9 days from the nearest change of sign.
What decan is December 11?
Its face ruler in the Chaldean order is the Moon, because December 11 is in the second decan of Sagittarius (10°–20°) in every sampled year.
What is the birthday number for December 11?
Both the day number 11 and the month-day number 5 assigned to December 11 in modern numerology are found by adding digits.
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 .
- Sagittarius (astrology) — Wikipedia. Verified .
- Wikipedia: December 11 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .