here is a possible NON-Cron solution that a friend of mine came up w/
1) Create a table w/ scheduled events and Account Ids attached to them.
2) Create a table w/ temporal event execution timestamps.
3) On journal entry check to see if there any schedule events for the Account
4) Check timestamp table for last execution If Last execution is out of range force execution Else continue as
normal
This is passive but it should allow for data integrity w/ out the need of
a external system.