This happens on average of once every 7 years- 4 times in every 28-year cycle of the calendar. It happens whenever March first is a Friday..
Chat with our AI personalities
About twice each year
The month of July has 5 Saturdays and 5 Sundays zerotimes in 2012.
there 5 sundays,mondays,saturdays in every 200 years
4 years
Over the very long average, once for every seven years. And it's "often".