week starts at Sunday or Monday??

[Dik.Winter at cwi.nl]

 > > 1st, 2nd, 3rd, ... well - I've never heard about "the 0-st".
 > > Enumerating starting with zero seems to have come in vogue with C, 

 > There's been a Zero Church Street in Cambridge, Mass., for a good deal
 > longer than there's been a C programming language.  Blame the
 > mathematicians.

The Indian calendars use a large number of counting years.  Some of those
start with 0, others with 1.  This even predates Cambridge, Mass..

dik