I really like the 7date notation with the base-7 notation counting the weeks down, but the 7month with the remaining 22/23 days of the year are still a kludge.

I really like the 7date notation with the base-7 notation counting the weeks down, but the 7month with the remaining 22/23 days of the year are still a kludge. With a 13 month calendar those remaining 1/2 days are neatly packaged and disposed of as "festival days". Harder to deal with 22/23 tailing days.