This section defines 'weeks'. The rules for weeks and week counting are culturally linked, but these rules define week start as always Monday. The rule for determining the "first week" that it includes the first Thursday (again, a culturally variant value). Shouldn't there be provision for allowing culturally specific week rules be applied? Or must this strictly be in terms of "ISO weeks"?
What's the use case for anything other than ISO weeks?
This bug was cloned to create bug 17858 as part of operation convergence.