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Álvaro Ramírez

10 May 2016 Emacs: Find number of days between dates

Needed to find the number of days between two dates. Emacs calendar must know this…

  • Fire up the manual (M-x info-emacs-manual or C-h r).
  • Info-goto-node (or g).
  • Type "counting days" and voilá:

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.

emacs-days-between-dates.gif

Note: you can use the mouse to jump to another date, or "g d" (calendar-goto-date).