Logging its demise.

Having established it's not "Jack-go-to-bed-at-noon" I wondered when it did sleep.
On the left - Early in the day.
Next three - 18:00 : 18:30 : 19:00

I'll not do it again - BUT - it seems it goes to bed a number of times and this time I caught a flower which both, didn't totally close, and had opened for its last time today; others opened next day - it didn't.