In our family we laugh and say that my sister had the worst timing in the world. Her first daughter was due in early January but she was in a breech position so her doctor performed a c-section on Dec. 28th. Two years later DSis was pregnant and again due in mid January. Her doctor had already scheduled a c-section for the second week in January but DSis went into labor on December 23rd and her second daughter was born on Christmas Eve.
In my family there isn't a month without a birthday. I have a niece, a nephew and a BIL with birthdays in January, my DD and my birthday in February, my mom and another niece in March, a third niece in April, my dad and MIL in May, another BIL in June, my sister in July, DH in August, another sister and my brother in Sept., FIL and SIL in October, DS in November and the previously mentioned nieces in December. It's now become a habit to go to the local Hallmark on the first of every month to get cards.