org-parse-time-string
org-parse-time-string is a compiled Lisp function in `org.el
'.
(org-parse-time-string S &optional NODEFAULT)
Parse the standard Org-mode time string.
This should be a lot faster than the normal `parse-time-string'.
If time is not given, defaults to 0:00. However, with optional NODEFAULT,
hour and minute fields will be nil if not given.