Je was op zoek naar: weeknum (Duits - Engels)

weeknum(datum; berechnungsmethode)
weeknum(date; method)

die funktion weeknum() gibt die nicht-iso-wochenzahl zurück, in welche das angegebene datum fällt.
the weeknum() function returns the non-iso week number in which the date falls into.

currentdate, currentdatetime, currenttime, date, date2unix, datedif, datevalue, day, dayname, dayofyear, days, days360, daysinmonth, daysinyear, eastersunday, edate, eomonth, hour, hours, isleapyear, isoweeknum, minute, minutes, month, monthname, months, networkday, now, second, seconds, time, timevalue, today, unix2date, weekday, weeknum, weeks, weeksinyear, workday, year, yearfrac, yearsname
currentdate, currentdatetime, currenttime, date, date2unix, datedif, datevalue, day, dayname, dayofyear, days, days360, daysinmonth, daysinyear, eastersunday, edate, eomonth, hour, hours, isleapyear, isoweeknum, minute, minutes, month, monthname, months, networkday, now, second, seconds, time, timevalue, today, unix2date, weekday, weeknum, weeks, weeksinyear, workday, year, yearfrac, years