LogFAQs > #944968219

This isn't quite accurate, og Roman calendar was 10 months and July and August were simply known by different names before Caesar renamed them (Iunius and Quintilis). When they switched to a 12 month calendar they added two extra months (which are our January and February). February was weird back then too because they used it to make up the difference in time due to the rotation of the earth (like our leap year every four years) but the duration varied significantly with a 13th month every second year after February and the yearly calendar working on a four year cycle.

For those curious, Janurary through June were named after Gods while July through December were simply 6-10