parse-time-iso8601-regexp

parse-time-iso8601-regexp is a variable defined in `parse-time.el'.
Its value is

("^\\([0-9][0-9][0-9][0-9]\\)-?\\([0-9][0-9]\\)-?\\([0-9][0-9]\\)" "T\\([0-9][0-9]\\):?\\([0-9][0-9]\\):?\\([0-9][0-9]\\)\\(\\.[0-9]+\\)?" "Z[-+]\\(\\([0-9][0-9]\\)\\):\\([0-9][0-9]\\)")

• This variable may be risky if used as a file-local variable.

Documentation:
List of regular expressions matching ISO 8601 dates.
1st regular expression matches the date.
2nd regular expression matches the time.
3rd regular expression matches the (optional) timezone specification.