What about the two months we delete?

Well, after we select which two months are the most useless and eliminate them from out calender we can then arbitrarily redistribute birthdays that fell within those months into different months. It is true that for those of us who currently exist this means their birthday will no longer be celebrated on the actual day of their birth, but people will have children, they will be born under our new ten month calender and their birthdays will be celebrated every year, every year being of course ten months long.