📅 Being born on leap day vs 🦈 Dying in a shark attack
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You're 2,565.4× more likely to be born on leap day
than to die in a shark attack
Periods differ: Being born on leap day is framed as per birth (calendar), while Dying in a shark attack is lifetime (US). The multiplier is a raw ratio of the 1-in-X figures — not a normalized lifetime risk. Compare cautiously.
Being born on leap day
1 in 1,461
per birth (calendar)
Dying in a shark attack
1 in 3,748,067
lifetime (US)
How we calculated this
Each figure is “1 in X.” The larger X is the rarer event. Dividing that number by the more common one gives the multiplier: you're 2,565.4× more likely to be born on leap day. When the periods differ, this is a raw ratio of those figures, not a lifetime-normalized risk.
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You're 2,565.4× more likely to be born on leap day (1 in 1,461, per birth (calendar)) than to die in a shark attack (1 in 3,748,067, lifetime (US)). ⚠️ Periods differ (per birth (calendar) vs lifetime (US)) — compare cautiously. — How Likely Is That? https://www.howlikelyisthat.com/compare/odds-of-being-born-on-leap-day-vs-odds-of-dying-in-a-shark-attack
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