It depends on the country and state/province.
20 days and an extra month of 5 days.
31
261
31
They ended last month on August 12 2012
to day is 2/23/2012 and there is 9 days and 3 month
because
8 to 10 weekend days per month. You will always have at least 8. There are 104 weekend days each year so you would have 8.6666 per month.
November has 30 days in both common years and leap years
There are 30 days in a month and each day has 24 hours. This is how we calculate.
That would depend on how many days were in each month.
The Aztec year consisted of eighteen months, each having 20 days