Birthday signs · Libra season
What zodiac sign is October 21?
October 21 falls in Libra according to the tropical zodiac. Over the 101 years from 1930 through 2030, the Sun stood in Libra at noon UTC on October 21, at 27.13° to 28.62° Libra. Day 28 to 30 of Libra season is October 21, located in its late part and linked to the element air.
Calculated across 1930–2030 · checked .
October 21 is Libra
| Libra at noon UTC | 101 of 101 years, 1930–2030 |
|---|---|
| Nearest change of sign | at least 1 day away |
| Birth time needed for the sign | no |
October 21 at a glance
| Sign | ♎︎ Libra, the Scales |
|---|---|
| Element and mode | air, cardinal |
| Polarity | positive (masculine) |
| Ruler | Venus (traditional) |
| Sun on this date | 27.1° to 28.6° Libra at noon UTC, 1930–2030 |
| Day of the season | day 28 to 30 of Libra season |
| Decan | third (20°–30°), face of Jupiter |
| Sidereal sign (Lahiri) | Libra |
| Day number | 3 (modern numerology) |
Rulers: Ptolemy; modern list.6
The decan: late Libra
| Noon Sun | 27.13° to 28.62° Libra |
|---|---|
| Decan | third (20°–30°) |
| Face ruler, Chaldean order | Jupiter |
Faces after Lilly, in Chaldean order.3
October 21 by the numbers
| Day number | 3 (2 + 1 = 3) |
|---|---|
| Month-day number | 4 (1 + 3) |
| System | modern numerology, digit sums |
Digit sums as numerology guides give them.4
Where the date falls in the season
| Day of Libra season | 28 to 30 |
|---|---|
| Libra season opened | September 22 (1 year) or September 23 (73) or September 24 (27) |
| Libra season closed | October 22 (37 years) or October 23 (64) |
| Element and mode | air, cardinal |
| Traditional ruler | Venus |
Seasons by the noon-UTC rule; rulers after Ptolemy.2
Born at this point in Libra season
Born on October 21, in the late part of Libra, this person feels the pull of a decision that is nearly finished. They can see both sides of a shared agreement and want every term fair before anyone signs. Others read that as caution, but it comes from wanting to leave the table with nothing unsaid. The same care can stretch a choice past the point where the group is ready. Learning when fair enough is good enough can ease that tension.
Interpretation, not prediction.
The sidereal sign
| Sidereal sign, Lahiri ayanamsa | Libra, all 101 years |
|---|---|
| Noon Sun, sidereal Libra | 3.6°–5° |
| Convention | Indian (Vedic) astrology |
Ayanamsa convention.5
Born on October 21
- Samuel Taylor Coleridge (1772–1834), English poet, literary critic and philosopher
- Alphonse de Lamartine (1790–1869), French author, poet and statesman
- Alfred Nobel (1833–1896), Swedish chemist and inventor
- Ursula K. Le Guin (1929–2018), American fantasy and science fiction author
- Benjamin Netanyahu (1949), Prime Minister of Israel (born 1949), (1996–1999; 2009–2021; 2022–present)
- Carrie Fisher (1956–2016), American actress, writer and screenwriter
- Kim Kardashian (1980), American media personality, businesswoman, model and actress
- Nemanja Vidić (1981), Serbian association football player
Birth dates checked on Wikidata.7
October 21 in history
Observed on this date:
- Armed Forces Day (Honduras)
- Egyptian Naval Day (Egypt)
- Indian Police Commemoration Day (India)
- National Nurses' Day (Thailand)
- Ndadaye Day (Burundi)
- Overseas Chinese Day (Republic of China)
- Trafalgar Day (the British Empire in the 19th and early 20th century)
- Birth of the Báb (2017) (Baháʼí Faith)
Events on October 21:
- 1139: Zengi, atabeg of Aleppo, takes Baalbek from the Burid dynasty.
- 1824: Portland cement is patented.
- 1945: In the 1945 French legislative election French women vote for the first time.
- 1983: The metre is defined as the distance light travels in a vacuum in 1/299,792,458 of a second.
- 2019: In Canada, the 2019 Canadian federal election ends, resulting in incumbent Prime Minister Justin Trudeau remaining in office, albeit with the Liberal Party in a minority government.
How the answer was worked out
Each year's sign was read from the Sun's tropical longitude on October 21, calculated at noon UTC for each year from 1930 through 2030 by Astronomy Engine.1 How the Machine works
Questions people also ask
What zodiac sign is October 21?
Counting the Sun at noon UTC over the 101 sampled years from 1930 to 2030, October 21 is Libra every time.
Is October 21 on a zodiac cusp?
No. Every October 21 from 1930 to 2030 found the noon Sun in Libra, and October 21 is situated at least 1 day from the nearest change of sign.
What decan is October 21?
October 21 remains in the third decan of Libra (20°–30°) throughout every sampled year, so the face ruler under the Chaldean order is Jupiter.
What is the birthday number for October 21?
In modern numerology, the figures for October 21 are a day number of 3 and a month-day number of 4, 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 .
- Libra (astrology) — Wikipedia. Verified .
- Wikipedia: October 21 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .