2 ms·Plenty of November birthdays because it's cold in Februrary (11 - 9 = 2).by jll29 2y agoPlenty of November birthdays because it's cold in Februrary (11 - 9 = 2).eszed 2y agoAlso: Valentines Day. I always figure that must have an effect.jqr- 2y agoI always assumed it was because of Valentine's Day.