perennial calendars – specifically leap week calendars (already implemented in the ISO week date calendar) – keeps all the advantages of 28 day months, and the leap week (instead of a leap day) allows for everything to stay lined up and doesn’t interrupt the 7-day week cycle
perennial calendars – specifically leap week calendars (already implemented in the ISO week date calendar) – keeps all the advantages of 28 day months, and the leap week (instead of a leap day) allows for everything to stay lined up and doesn’t interrupt the 7-day week cycle