We divide the year into months of ~30 days because that’s roughly the period of the moon, adapted to fit a solar year.
However, would a civilization living on a world with no moon but a year of ~365 days with seasons and a day/night cycle still come up with a ~30 day month?
I understand that there are benefits to the creation of months, even in non lunar/lunisolar calendar such as in the Gregorian/Julian calendars. They allow for the division of the year in everyday usage (it’s easier to say June 23, 2020 than 175th day of 2020) and schools/businesses can divide the year into quarters. However, these were created with the Moon’s period in mind as a modification of previous lunar/lunisolar calendars.
So would a civilization living without a Moon still come up with months? Would they still be ~30 days or would they be based off of something else? I was thinking about maybe using solar constellations or other stars to divide the year, but they’re not as noticeable as the moon. So would they?
To confirm: these people have 10 fingers and ten toes and are humanoid