icalendar--find-time-zone

icalendar--find-time-zone is a compiled Lisp function in `icalendar.el'.

(icalendar--find-time-zone PROP-LIST ZONE-MAP)

Return a timezone string for the time zone in PROP-LIST, or nil if none.
ZONE-MAP is a timezone alist as returned by `icalendar--convert-all-timezones'.