why do we have 12 months in a year and not 13

why do we have 12 months in a year and not 13. There are some references to why do we have 12 months in a year and not 13 in this article. If you are looking for why do we have 12 months in a year and not 13 you've came to the right place. We have posts about why do we have 12 months in a year and not 13. You can check it out below.