WeekOfYearFiscalReturns a number between 1 and 53 representing the week containing date, figured according to startingDay.date - any calendar datestartingDay - any number between 1 and 7, where 1 represents SundaystartingDay indicates which day is considered the first day of the week.Important To avoid errors when using dates, always use four-digit years. For more information about how FileMaker Pro handles two-digit dates, see Conversion of dates with two-digit years.WeekOfYearFiscal(Date(1;7;2008);1) returns 2.WeekOfYearFiscal(Date(1;1;2009);5) returns 1.WeekOfYearFiscal(Date(1;2;2009);1) returns 53.