Clock-timers rely on external cue to start-finish work, etc. E.g. wake up every day at 6:30 am, start work at 9 am, lunch at noon, gym at 5 pm, sleep at 10 pm.
Event-timers might wake when no longer sleepy, eat when hungry, work on project until done.
https://psyche.co/ideas/is-it-better-to-live-in-clock-time-or-event-time
@wolfwoman The industrial revolution and the cheap ubiquitous watch - has forced many of us to become clock-timers