Distribution of birthdays with estimated dates of conception: United States 1994 - 2014 02-18-2025 14:49 PM - last edited 02-20-2025 07:06 AM

[MissingVanSushi]

Notable Findings

• 9 of the top 10 most common birthdays are in September with the most common on the 9th.

• The least common birthdays are Christmas Day, Christmas Eve, New Years Day, and the 4th of July.

• Births also decrease on Thanksgiving, April Fools, Halloween, February 29th, and the 13th of each month.

• Births on Valentines Day increase by 5% after a 5% decrease the day before.

• When the day and the month are the same number (e.g. March 3rd) there is a slight increase in births compared to the day before except in January.

• The top 3 months for conception are December, October, and November.

• The number 1 most common estimated date of conception is the 3rd of December.

• Note: Statistics for the 29th of February have been multiplied by 4

Data Source:

https://www.kaggle.com/datasets/ulrikthygepedersen/birthdays

Report Author:

Adrian Liu

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[slindsay]

Great - I'll get this re-posted to the web today! Thanks for letting me know, and thanks for participating! 

[MissingVanSushi]

Hey Shannon, version 1.2 is here.

I decided to ditch the conception dates as they are just estimates and not reflective of reality.

Please update my report when you can.

Thanks a mill!

[MissingVanSushi]

Hi @slindsay 

I made some very minor tweaks to the layout of my pbix for simplicity and cleanliness by resizing the canvas.

This version also includes the update to the conception date calculation, but I hope you'll allow me to leave that in as the report logic is not judged or scored.

Thanks for organising this event. It's been a great experience already!