28days roughly
But anything from 24-35 is normal
Most people establish at pattern, i.e. all periods are roughly the same length
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For humans, 28 days on average with menstruation ending on day 1 and ovulation occurring on day 14. But, every woman's cycle is different. Talk with your gynecologist for more information.
A furnace should cycle on and off after every 4 hours.
The main processes in the in dependant reactions are collectively called the Calvin Cycle.
Not very often. probably every hour it should come on for about 20 minutes if that.
A payroll cycle is the determined period of time of allocated hours worked.