Hi Wol,
> This reads to me exactly like the ODF spec, so it seems that Excel is not > abiding by the Excel spec if it returns 29-dec as week 53 ... > > To quote the Excel spec, "System 1 The week containing January 1 is > the first week of the year, and is numbered week 1." That says to me - as > a native English speaker, that it is a complete week INCLUDING ANY DAYS > BEFORE JAN 1. > > So yes. It looks like Excel does not do what it says it does. Quelle > Surprise. I have studied quite some sources now and have come to the conclusion that there are 2 views: -a generally shared view that is the same as ODFF1.2. This includes MariaDB SQL. -a Microsoft view that partial weeks are used. This conflicts a.o. with the Islamitic week numbering system. I have closed the bug report as NOTOURBUG. Winfried _______________________________________________ LibreOffice mailing list LibreOffice@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/libreoffice