The months of July, August and September appear to be the most popular for births. Most major holidays have very few births, but Valentine's Day takes the top spot among them. The most babies are born in the summer, with an average of 12.25 births per day. Winter is not so surprisingly the least popular month for new children, with 11.39. Days which the most babies are September 12, 18, 25 and 26 – they come about nine months after what are, for many, the harshest days of winter. September 11 also ranks among the days with higher than average birth rates.