icalendar-export-sexp-enumeration-days

icalendar-export-sexp-enumeration-days is a variable defined in `icalendar.el'.
Its value is

14

Documentation:
Number of days over which a sexp diary entry is enumerated.
In general sexp entries cannot be translated to icalendar format.
They are therefore enumerated, i.e. explicitly evaluated for a
certain number of days, and then exported. The enumeration starts
on the current day and continues for the number of days given here.

See `icalendar-export-sexp-enumerate-all' for a list of sexp
entries which by default are NOT enumerated.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 25.1 of Emacs.