Leap Year
A leap year is, in the Gregorian calendar, any year divisible by 4 except centenary years divisible by 400. A leap year (or intercalary year) is a year containing one extra day (or, in the case of lunisolar calendars, a month) in order to keep the calendar year synchronized with the astronomical or seasonal year.
PlayStation 3 - February 2010 Issue
In February 2010, PlayStation 3's world wide encountered severe connectivity issues due to problems with the on-board clock. The PlayStation 3, the original – not the slim version, is programmed with an invalid leap year reference for 2010. Due to the fact the PS3 believes this year is a leap year, February is being considered to be over 28 days long in 2010.
PlayStation 3 Leap Year