Why September 9 is the most common birthday

Holiday cheer can lead to a baby boom nine months later. . In that 10-year-period, September tops the with nine out of the 10 most common birthdays falling on September. Based on this analysis, the ninth day of the ninth month is the most popular birthday.during the colder months of the year and holiday season. Some people tend to work less as the holidays approach, so there is more time to party-hop, drink a few more cocktails than usual, and the rest is clear. Pregnancies are supposed to lastFor a September 19 birthday, conception date should technically be December 27. All of those September 22 to 26 babies are generally conceived around New Years Eve and New Years Day. December is also a romantic season in general. According to data collected from the wedding planning website The Knot,As far as rare birthdays go, Leap Day is the clear winner, but the rest of the rare birthdays are those on major holidays. This is likely because scheduled inductions and C-sections are avoided on days like Christmas and Fourth of July.