org-ts-regexp0

org-ts-regexp0 is a variable defined in `org.el'.
Its value is

"\\(\\([0-9]\\{4\\}\\)-\\([0-9]\\{2\\}\\)-\\([0-9]\\{2\\}\\)\\( +[^]+0-9>
\n -]+\\)?\\( +\\([0-9]\\{1,2\\}\\):\\([0-9]\\{2\\}\\)\\)?\\)"

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

Documentation:
Regular expression matching time strings for analysis.
This one does not require the space after the date, so it can be used
on a string that terminates immediately after the date.