Hello Biff,

Of course I can - my INT/MOD one I derived on my own - but Daniel M.
was the first one to show it (with the weekday function), I presume:
http://www.sulprobil.com/html/date_formulas.html

My MOD() part just calculates the weekday which is used to shift the
calculation to the right edge of the /7 cut, and the INT / 7 part cuts
the right weeks.

OT: If you need more details, come to London or to Berlin for a
beer :-)

Regards,
Bernd