+.It Cm \&%u
+is replaced by the weekday (Monday as the first day of the week)
+as a decimal number (1-7).
+.It Cm \&%V
+is replaced by the week number of the year (Monday as the first day of
+the week) as a decimal number (01-53). If the week containing January
+1 has four or more days in the new year, then it is week 1; otherwise
+it is week 53 of the previous year, and the next week is week 1.