4
In 2009, there were 52 Saturdays.
In October 2009, there were 5 Saturdays.
There are four Saturdays in February 2011. 5th, 12th, 19th, and 26th.
52 Sundays and 52 Saturdays.
52
In 2008, January had four Saturdays. February had four Saturdays. March had five Saturdays. April had four Saturdays. May had five Saturdays. June had four Saturdays. July had four Saturdays. August had five Saturdays. September had four Saturdays. October had four Saturdays. November had five Saturdays. December had four Saturdays.
2016.
2020
Issues - The Saturdays song - was created on 2009-01-04.
Work - The Saturdays song - was created on 2009-06-29.
2009 was not a leap year, and therefore February 2009 contained 28 days.
February can have five Saturdays when it has 29 days, which occurs during a leap year. For this to happen, February must start on a Saturday. This alignment allows the Saturdays to fall on the 1st, 8th, 15th, 22nd, and 29th. The next occurrence of this is in 2028.