Due on Halloween: When Did You Conceive?
A baby due on Halloween (October 31) was most likely conceived around February 7 of the previous year.
| Due date | October 31 |
|---|---|
| Most likely conception date | February 7 |
| Likely conception window | February 4 – February 10 |
| Estimated last period | January 24 |
Only a small share of babies arrive on their exact due date, so a holiday due date is a target rather than a promise.
Use the conception date calculator for your exact dates.
Conception Date Calculator: Find the most likely conception date from your due date.
Open the calculatorThis article is general information, not medical advice. Talk to a doctor or midwife about your own pregnancy or fertility.