In scripting, it's not possible (not easily). I've added this as a request to the tracker:
https://winscp.net/tracker/1964
You can vote for it there.

With WinSCP .NET assembly, it's not difficult to find a path matching a pattern and use it for later actions.

I have a directory like this yyyy-mm-dd-hh-nn-ss. I dont know the time created only the date. How can i open this folder?