31.3 Counting Days
M-=
​
Display the number of days in the current region (calendar-count-days-region
).
To determine the number of days in a range, set the mark on one date using C-SPC
, move point to another date, and type M-=
(calendar-count-days-region
). The numbers of days shown is inclusive; that is, it includes the days specified by mark and point.