Time clock standards

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The western time standards dividing the year into 12 months, the day into 24 hours or 12 hours AM and 12 hours PM, the hour into 60 minutes and the hour into 60 seconds derived from the Mesopotamia[1] using the sexagesimal[2] or base 60 numeral system.

Note:
The base 60 systems is a highly composite number as 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 are factors.
  1. ↑ Mesopotamia Mathematics
  2. ↑ Sexagesimal or base 60 numeral system
    3. Retrieved from "http://mars.merhot.dk/w/index.php?title=Time_clock_standards&oldid=25719"