So getting the clock to decide to show itself again is going nowhere and I can't find a common denominator to why or how it shows itself again. One time headpatting Kana brought it back, but not any other time. One time changing the time block brought it back, but not any other time. One time sleeping brought it back, but not on subsequent attempts. One time talking to Viola brought it back, but not other times.
...maybe it's just shy?