More ideas from Kate
The calender was created based off of the female menstrual cycle. Women had nothing + no one to teach them about it, so when they began to clue in that a period was more than a "one time only" thing, they at least wanted a rough timeframe for when they could expect it again. They kept track of the days one way or another, began to notice that another would typically occur within 30 days.. Thus, months + the calender were born~ Thank you, ladies~

The calender was created based off of the female menstrual cycle