IEnumerable<DateTime> GetDaysBetween(DateTime start, DateTime end)
{
for (DateTime i = start; i < end; i = i.AddDays(1))
{
yield return i;
}
}
var weekends = GetDaysBetween(DateTime.Today, DateTime.Today.AddDays(365))
.Where(d => d.DayOfWeek == DayOfWeek.Saturday && d.DayOfWeek == DayOfWeek.Sunday);