Everything about your birthday, on one page
Your half birthday, your golden birthday, the day of the week you were born and how many people share your big day. Pick a date and we'll make you a birthday page to keep or send to someone.
Or peek at today, September 28 September 9 December 25 February 29
Every birthday, in one ring
Each little line is one day, starting with January 1 at the top. The longer and pinker the line, the more babies are born that day. Tap any line to open its page.
- The late-summer bulgeJuly to September is packed, peaking on September 9.
- The Christmas gapLook just before the top: December 24 to 26 nearly vanish.
- The Fourth of July dipA short blue line right in the middle of summer.
Today, September 28
How crowded is your birthday?
Every square is one day of the year. Pink days are packed with birthdays, blue days are quiet. Tap one to open its page.
babies on an average September 9, the busiest birthday of the year. Count back nine months and you land on the holidays. Make of that what you will.
on Christmas Day, the quietest. Hardly anyone schedules a delivery for Christmas, and it shows.
days is a February 29. Leap-day babies are rare because the day is rare, not because it's unpopular.
more babies are born on a Tuesday than on a Sunday
The month barely matters: September only beats January by about 10%. The day of the week matters a lot, because most planned deliveries happen Monday to Friday.
Little tools, big answers
Half birthday calculator
The date six months after your birthday, and what happens if you were born on August 31.
Find mine →Golden birthdays
The year your age matches the day you were born. Coming soon.
Most common birthdays
All 366 days ranked, with the stories behind the peaks. Coming soon.