| Check(DateTime, Int32) | Check whether this date is part of the schedule. Use if date is to be checked only against this schedule. Otherwice, precalculate date.DayOfWeek, date.Day and date.Months and used optimized version of Check. |
| Check(Int32, Int32, Int32) | Check whether a date, defined by its dayOfWeek, dayOfMonth and month is part of this schedule. Use if dayOfWeek, dayOfMonth and month is precalculated from a date (for optimization) |