13 Months Question
Why Don’t We Have 13 Months with 28 Days in the Calendar?

Explore why our calendar has 12 months instead of 13, based on Earth’s orbit and seasonal cycles.

13-Month Myth
Did Humans Ever Have 13 Months in a Year? Exploring Historical Calendars

Discover the history of 13-month calendars, including the French Revolutionary Calendar, and why the Gregorian calendar has 12 months.