Labels:text | clock | circle | font OCR: The Babylonian numerical 360 degrees system and calendar. in a circle 60 seconds in a minute and 60 minutes in one hour Accustomed as we are to using the base ten to do our mathematics, we have acquired some of our units from the early Babylonians who used the base sixty for their calculations. The Babylonian calendar was devised by early scientists who noticed that there were 12 cycles of the moon in a year.