Born on August 17
August 17: Leo Zodiac & Famous People
The zodiac sign for August 17 is Leo. Famous people born on August 17 include Robert De Niro, Hidekazu Akai — 2 notable figures in all, plus this day’s birthstone, birth flower and birthday rarity.
Actor · b. 1943
Boxer · b. 1959
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How many people share the August 17 birthday?
~930 thousand in the U.S., ~22 million worldwide
※ Rough estimate assuming birthdays are evenly distributed (published population figures).
The August 17 birthday profile
Zodiac
Leo
Birthstone
Peridot
Birth flower
Sunflower
Birth color
Sunflower Yellow
Rarity
#79/366
Weekday
Which day?
💎 Peridot (Marital Happiness & Harmony) · 🌸 Sunflower (Adoration, Passion & Radiance)
Leo traits
General traits of the sign August 17 falls under (7/23–8/22) — not a per-day personality or fortune.
Element
Fire
Modality
Fixed
Ruling planet
the Sun
Radiant and generous, a natural leader who draws people in.
Associated strengths: Generous, Warm-hearted, Confident, Creative
August 17's decan: 3rd decan (20°–30°, ~August 13–August 22) — sub-ruler Mars (Aries)
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 August 17?
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