Born on October 21
October 21: Libra Zodiac & Famous People
The zodiac sign for October 21 is Libra. Famous people born on October 21 include Kim Kardashian, Toshiyuki Nagashima — 2 notable figures in all, plus this day’s birthstone, birth flower and birthday rarity.
TV Personality · b. 1980
Actor · b. 1956
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How many people share the October 21 birthday?
~930 thousand in the U.S., ~22 million worldwide
※ Rough estimate assuming birthdays are evenly distributed (published population figures).
The October 21 birthday profile
Zodiac
Libra
Birthstone
Opal / Tourmaline
Birth flower
Chrysanthemum
Birth color
Madder Red
Rarity
#270/366
Weekday
Which day?
💎 Opal / Tourmaline (Hope, Luck & Creativity) · 🌸 Chrysanthemum (Nobility, Longevity & Truth)
Libra traits
General traits of the sign October 21 falls under (9/23–10/23) — not a per-day personality or fortune.
Element
Air
Modality
Cardinal
Ruling planet
Venus
Sociable and fair-minded, valuing harmony and beauty.
Associated strengths: Diplomatic, Fair-minded, Sociable, Cooperative
October 21's decan: 3rd decan (20°–30°, ~October 13–October 23) — sub-ruler Mercury (Gemini)
Each sign splits into three 10° decans; the 1st is the sign itself, the 2nd and 3rd are sub-ruled by the same-element signs (a traditional rule; the boundary shifts ±1 day by year).
※ Traditional Western astrology attributes — for cultural interest, not a scientific claim.
🎂 Born on October 21?
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