Nein, laut ISO-Standard ist die erste Kalenderwoche jene, in die der erste Donnerstag faellt:
Zitat:
This week numbering scheme was introduced earlier by the ISO with the standard ISO 2015:1976 (Numbering of Weeks) and was repealed on 1 June 1988 with the imminent introduction of ISO 8601. The calendar defined in the ISO standards 2015 and 8601 is commonly referred to as the “ISO calendar”.
...
The numbering of the ISO calendar weeks is defined (sect. 4.3.2.2 on pp. 7-8) as:
[...] the first calendar week of a year is the one that includes the first Thursday of that year and [...]
|
http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm
Mehr zum ISO-Standard:
http://www.iso.ch/iso/en/prods-servi...esandtime.html
Oder die entsprechende ÖNORM:
Dokumentnr. ÖNORM EN 28601
Ausgabe 1993 10 01
Titel Datenelemente und Austauschformate - Informationsaustausch - Darstellung von Datum und Uhrzeit (ISO 8601, 1. Ausgabe 1988, und Technical Corrigendum 1:1991)
https://www.norm-online.info/ecom/on...PHXUCQCAICCFEQ