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### 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.