time-range, if possible.
The optional ZONE is omitted or nil for Emacs local time, t for
-Universal Time, `wall' for system wall clock time, or a string as in
-the TZ environment variable."
+Universal Time, `wall' for system wall clock time, or a string as
+in the TZ environment variable. It can also be a list (as from
+`current-time-zone') or an integer (as from `decode-time')
+applied without consideration for daylight saving time."
(format-time-string
format
(apply 'encode-time