Earlier quoted context omitted.
> Per my knowledge US is the only country which stubbornly (and illogically) considers Sunday to be the first day of the week /Officially/ almost everyone has standardized on ISO 8601 where Monday = 1 and Sunday = 7. But unofficially, not really. The week is still popularly understood to start on Sunday in English Canada, and probably some other parts of the English-speaking world. A quick check of Wikipedia suggests…
I thought that that in Slavic languages Sunday would be the first day of the week, since the Polish for 'monday' means 'after sunday'. EDIT: got 'monday' and 'sunday' the wrong way round
It looks like Polish is similar except that Sunday is "Not-Doing"