HOW DO I OPEN THE DIAL SAFE?
There's a clear hint in this very room.
--
Look at the calendar.
--
Everything is helpfully crossed out. The numbers that aren't must be important.
--
Turn the dial clockwise to 14, counterclockwise to 22 and clockwise to 4. (Tap the dial to rotate it, and anywhere else, except the handle, to change direction. Tap the handle after you've entered three numbers.)