I've had the same problem but a little bit different (Bookmarks 136/138). In my version the hints said "16:00-20:00 - Lingerie Shop - Mon/Wed/Fri". I've tried everything for hours, after hospital shift and w/o but nothing worked. But then I read your comments and tried "Tue/Thu/Sat" and that worked. So the hints in the game are wrong in my version (downloaded here about 3 days ago). Anyway, thanks a lot for the help!
Yes, some of the days are unfortunately incorrect in the hints.
When in doubt - open the console and check the EVENTS[x] fields or use URM52 and inspect the array EVENTS, it has a field for Day, Hour, and the Description (which is the hint, that may have the incorrect text), but the Day field will be the correct one.
You can filter it for the ".Done" and ".IsAvailable" (or was it .Available) tags to see which ones you haven't completed yet.
Use Grok.com to assist with the python code if you're not proficient with it, or check earlier pages in this thread for some scripts to assist.
(or wait for a bugfix)
The "secret" button in the bottom left corner is still there which shows which EVENTS[x] you haven't completed yet, so it can be used to quickly find out which events to query in the console. Like, if it says "1, 6, 20" you can open the conosle and type
EVENTS[1].Hour and EVENTS[1].DayOfWeek to see the values of those two.
Or you can just run this in the console (Enabled with ALT-O if you have 0x52_URM.rpa installed in the ./game folder. Grab it from this forum, or activate RenPY console through other means such as editing ./renpy/common/00console.rpy and find the line "init -1500 python:" and below it it will say config.console = False, change this to True (make sure not to add any extra space etc..) and save, restart game, and Shift-O should open console)
Python:
print[(i, e.DayOfWeek, e.Hour, e.Location, e.Desc) for i, e in enumerate(EVENTS,1) if not e.Done]
Edit: Oh yea, usually when an event is Hidden it is because it hasn't been activated by another one, or bugged. Like in earlier chapters you'd have your "Truth or Dare" in the evening only after you asked for it during dinner, so until that time, the event would be listed as "HIdden" and "Available". And ofcourse, the event that unlocks these, perhaps are listed as Done = True, but you forgot to do the follow-up event so now you need to first do the event that isn't liste in the hints before you can do the one you actually need to do to continue
