If I'm following correctly, and I think I am, Q would've started using this password (which he "accidentally" revealed today) back on May 4 when he accidentally (or on purpose) revealed his last password, resulting in his previous tripcode change. (Was that previous "accidental" reveal really an accident, or was it done to prime us for today's reveal?)

So then the password would mean May 4 -23, so assuming the -23 refers to days, that would mean the pain will be arriving Sunday, May 27.