The Sumeri­ans looks to the heavens as they invented the system of time back in history. They decided to divide the hours into 60 minutes and the days into 24 hours. The rea­son for this divi­sion is to prevent time from func­tioning on a dec­imal or duodecimal basis and instead operate on a sexagesimal system. For the ancient Sumerin in­novators who divided the moments of the heavens into countable intervals, 60 was the perfect num­ber. The number 60 is divided by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20 and 30 in equal parts. Ancient astrono­mers believed that there were 360 days in a year, a number in which 60 fits neatly six times. The Su­merian Empire did not last however but this is one system that they gave to the world that is still be­ing used today