Returns the weekday instance number in the month for the given date
The year
The month [1-12]
The day [1-31]
Instance number [1-5]
timezonecomplete.Argument.Year for invalid year (non-integer)
timezonecomplete.Argument.Month for invalid month
timezonecomplete.Argument.Day for invalid day of month
Returns the weekday instance number in the month for the given date