Conception Date Calculator: Estimate Based on Due Date

To calculate the approximate date of conception, we need to subtract 266 days (the average gestation period) from the expected date of delivery.

Expected date of delivery: April 29

Subtract 266 days: August 1 or July 31 (adjusting for leap year)

Therefore, the approximate date of conception is either August 1, 2022 or July 31, 2022, depending on whether the year was a leap year.