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Age Calculator
If we consider Feb. 28 to Mar. 28 to be one month, then the result is one month and 3 days. If we consider both Feb. 28 and Mar. 31 as the end of the month, then the result is one month. Both calculation results are reasonable. Similar situations exist for dates like Apr. 30 to May 31, May 30 to June 30, etc.
Hours
720 for a 30-day month 744 for a 31-day month 730.5 on average: Hours in a year: 8,760 for a 365-day year 8,784 for a 366-day year 8,766 on average: Hours in a decade: 87,648 for a 2-leap-year decade 87,672 for a 3-leap-year decade 87,660 on average: Hours in a century: 876,600: Search: Other Calculators.
Time Calculator
For example, 1 hour, or 60 minutes, can be evenly divided into 30, 20, 15, 12, 10, 6, 5, 4, 3, 2, and 1 minute, illustrating some of the reasoning behind the sexagesimal system's use in measuring time. Development of the second, minute, and concept of a 24-hour day: