while using date_trunc('week', some_date) to get the date of the first day of the week I noticed that it was working as expected: Monday is considered the start of the week. I assume this depends on some locale setting, but I can't figure out which it is, so I can make sure this is not "accidently" changed. I tried changing LC_TIME (American_America) but that still returned Monday as the first day (my understanding is that in the States Sunday is considered the start of the week)
Any pointers are appreciated (did I miss it in the manual?)
Regards Thomas
Actually I think I misunderstood your post. You're looking for the *date* of the first day of the week, not the day. My bad. :)