why do we have 12 months instead of 13 gregorian calendar

why do we have 12 months instead of 13 gregorian calendar. There are some references to why do we have 12 months instead of 13 gregorian calendar in this article. If you are looking for why do we have 12 months instead of 13 gregorian calendar you've came to the right place. We have posts about why do we have 12 months instead of 13 gregorian calendar. You can check it out below.