Opher asks in his blog, Is there a non-event event ? on absence as a pattern.
All “non-event” examples that the event processing community has offered, to date, have been based on the premise that an event is created when something does not happen based on time, schedule or a timer – and many seem to want to refer to this as a “non event.”
Opher is now calling this situation an “absent event.”
In my opinion, the correct term should be a “time-based event” because the event is triggered by a timer or similar time-based object; the term “non-event” should be dropped from the event processing glossary.