the time cryer

jack pays autistic-like attention to time.*  at least 3 times a day, he can be heard randomly calling out the time.  it isn't to anyone really, it rarely serves a purpose, and he doesn't expect a response.  i've tried considering the reasoning behind it but i've concluded (as did christopher in the curious incident of the dog in the night-time), "Prime numbers are what is left when you have taken all the patterns away."  maybe this time cryer is just calling out prime numbers... 

*it should be noted that odd time-stamping behavior never occurs during bath time!