No not sure ๐
but in this measurement we got more weeks per year than the traditional year (52 weeks x 7 days = 364 days).
In the Time 2.0 framework there is
60 dweeks x 6 days = 360 days ( one decentralized year )
12 dmonths of 30 days = 360 days
no specific sundays ๐ or custom mondays ...