Your “special day” is probably not as special as you think. Check out this awesome chart from The Daily Viz to find out how common your birthday is.
The darker squares indicate more births on those days, and as you can see there is a huge clump of them in the late summer. Those common September birthdays have conception dates right around Christmastime (it’s the most wonderful time of the year, perhaps?)
See more rad data and possible reasons why some birthdays are more common than others from Matt Stiles over at The Daily Viz.