Get all saturdays in a Year using c#

plz help me to find all saturdays in a year.

Code:

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        DateTime start = new DateTime(2009, 1, 1);
        DateTime end = new DateTime(2009, 12, 31);
        List<DateTime> saturdays = new List<DateTime>();
        while (start < end) {
            if (start.DayOfWeek == DayOfWeek.Saturday) {
              saturdays.Add(new DateTime(start.Year, start.Month, start.Day));
              start = start.AddDays(7);
            }
            else {
              start = start.AddDays(1);
            }
        }

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I don't know if there is any function that gets all Saturdays in a year, but this code also works