2020
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.
2016.
There are four Saturdays in February 2011. 5th, 12th, 19th, and 26th.
After 2008, the next year to have five Fridays in February will be 2036.
Prior to this year, July had five Fridays and five Saturdays in 2010.
They all have four Saturdays. However, usually only four months per year have five Saturdays while usually eight months per year have only four Saturdays.
The only way there can be five Sundays in February is if it is a leap year AND February 1 is a Sunday. The last time that happened was 2004, and the next times it will happen are 2032, 2060, 2088, and 2128.
About twice each year
The last year when December had 5 Saturdays, 5 Sundays, and 5 Mondays was 2017. This occurs when December 1st falls on a Friday, which allows for the distribution of days to create five occurrences of each of those weekdays in the month. The next occurrence will be in 2028.
September typically has four Saturdays. However, if the month starts on a Saturday, there will be five Saturdays that month. To determine the exact number, you can check the specific year in question, as the day of the week for September 1st can vary.
There were 52 Saturdays in 2008. This was not a leap year. Sometimes with a leap year, there may be a 53 Saturdays in a year.
April has four Saturdays, occurring on the 1st, 8th, 15th, 22nd, and 29th, depending on the year. If April begins on a Saturday, there will be five Saturdays that month. However, in most years, April typically has four Saturdays.