Why are there 60 seconds in a minute?
Many people believe that the origin of the sixty minute hour goes back to the ancient Sumerians. They used a sexagesimal system – one based around the number 60. But why? The answer would appear to be arithmetic. The number 60 may not be popular with computers but it’s very useful for people. It can be divided easily by 2, 3, 4, 5 and 6 – as well as the ubiquitous 10. Although 100 is divisible by 2, 4 and 5 it is not cleanly divisible by 3. A third of an hour would thirty three and a third minutes, which is not pretty. It’s interesting to note that the number six has a special place in arithmetic as the smallest “perfect number”.
” Which also led to 60 minutes in an hour? I have had trouble determining why the number 60? Any help would be appreciated. Thanks, Andy Hi Andy, The importance of 60 comes from the Babylonians used a base 60 number system as compared to our base 10 system. 60 and 6×60 = 360 were very natural numbers for them to work with. They used a 360 (6X60) day calendar as opposed to our 365 day calendar. The ancient astronomers would have noticed that it takes 365 days for the sun to move (about our fixed Earth) past the stars that appeared to be fixed to an external heavenly sphere, and return to where they started. The choice of 360 days for a year may have been a compromise between a 365 day solar year and a 354 day lunar year, (consisting of 12 months of 29.5 days each).
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