When to Conceive a Baby to Share Usain Bolt's Birthday
Usain St. Leo Bolt is a Jamaican retired sprinter.
Plan a Baby Born on Usain Bolt's Birthday (August 21)
How to Plan a Baby for Usain Bolt's Birthday (August 21)
If you dream of your child sharing a birthday with Usain Bolt on August 21, the optimal conception date is around November 28 of the preceding 38-week gestation cycle (266 days before birth).
Use the interactive slider above to adjust the gestation period between 35 and 41 weeks and observe how the conception timing match (%) and clinical delivery window probabilities change in real time.
When Was Usain Bolt Conceived?
Usain Bolt was born on August 21, 1986. Based on the standard human gestation period of 38 weeks (266 days from ovulation/conception), he was most likely conceived around November 28, 1985.
While only about 4%–5% of babies arrive on their exact due date, nearly 60% are born within a ±7-day window around their target date when conceived during the peak 5-day fertile window.
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