Time's a passage that will narrow as it's traveled; clashing rocks of past and future crush the marrow from the present. Nagging clocks will count each second of the numbered days that still remain, and sound the buzzer rousing those who slumber. Those unwary fools who founder on the unseen reefs of time have never noticed how the hours will quicken, forced through finite lives to frothing waves, then crest and still.
Finish as sonnet, or leave alone? Not sure if there's more to this one.