As absentminded as you may be, one holiday you’ll always remember is your birthday. On the other hand, the date of your conception is probably the one day you try desperately to forget.
Many believe these dates are completely random—a one in 365 chance for every person. But as it turns out, the day you were conceived is likely not as arbitrary as you think.
Using death record collections ranging from official government records to historic documents transcribed and digitized by various organizations, the genealogy experts at MooseRoots crunched the numbers to identify the most popular holidays to—ahem—start a family.
MooseRoots examined death records from 1936 to 2012 to identify birth dates of over 14 million people. They then subtracted 38 weeks (the average length of a pregnancy from conception to birth) to pinpoint the most likely conception date. Then, MooseRoots mapped dates for 14 holidays all the way back to 1936. In order to account for the varying lengths of pregnancy, they extended each “holiday” to include the week before and after.
Without further ado, here is the list of holidays babies are most likely to be conceived on.
Percent conceived around Labor Day: 3.70%
Percent conceived on Labor Day compared to average: -0.35%
Percent conceived around Independence Day: 3.82%
Percent conceived on Independence Day compared to average: -0.23%
Percent conceived around April Fool’s Day: 3.91%
Percent conceived on April Fool’s Day compared to average: -0.14%
Percent conceived around Easter: 3.93%
Percent conceived on Easter compared to average: -0.12%
Percent conceived around Cinco De Mayo: 3.95%
Percent conceived on Cinco De Mayo compared to average: -0.10%
Percent conceived around Memorial Day: 3.97%
Percent conceived on Memorial Day
compared to average: -0.08%
Percent conceived around Mardi Gras: 3.98%
Percent conceived on Mardi Gras compared to average: -0.07%
Percent conceived around St. Patrick’s Day: 3.98%
Percent conceived on St. Patrick’s Day compared to average: -0.07%
Percent conceived around Valentine’s Day: 3.98%
Percent conceived on Valentine’s Day compared to average: -0.07%
Percent conceived around Presidents Day: 4.00%
Percent conceived on Presidents Day compared to average: -0.05%
Percent conceived around Halloween: 4.05%
Percent conceived on Halloween compared to average: 0.00%
Percent conceived around Thanksgiving: 4.11%
Percent conceived on Thanksgiving compared to average: 0.06%
Percent conceived around New Year’s Eve: 4.14%
Percent conceived on New Year’s Eve compared to average: 0.09%
Percent conceived around Christmas: 4.15%
Percent conceived on Christmas compared to average: 0.10%
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Cross-posted from: Graphiq Health
Natalie is an Editorial Lead at Graphiq who loves to create the kind of stuff you can't help but bring up at dinner. She oversees lifestyle content and primarily writes for FindTheHome, HealthGrove and MooseRoots. When she's not up to her nose in data-goodness, she can usually be found dancing to '70s funk and eating something with chocolate in it.