Friday the 13th
occurs when the thirteenth day of a month falls on Friday,
which superstition holds to be a day of good or bad luck.
In the Gregorian calendar, this day occurs at least once,
but at most three times a year.
Any month's 13th day will fall on a Friday if the month starts on a Sunday.
In 2009 this applies to the months of February,
March, and November.
The next year to have three Friday the 13th dates will be 2015
occurs when the thirteenth day of a month falls on Friday,
which superstition holds to be a day of good or bad luck.
In the Gregorian calendar, this day occurs at least once,
but at most three times a year.
Any month's 13th day will fall on a Friday if the month starts on a Sunday.
In 2009 this applies to the months of February,
March, and November.
The next year to have three Friday the 13th dates will be 2015
