HI,
How about the following expression?
targetDate = New Date(2022,8,29)
Then
targetDate.AddDays({-7,-1,-2,-3,-4,-5,-6}(CInt(targetDate.DayOfWeek))).ToString("dd.MM.yyyy")
targetDate.AddDays({-13,-7,-8,-9,-10,-11,-12}(CInt(targetDate.DayOfWeek))).ToString("dd.MM.yyyy")
Regards,
