"One month from now" is horrible. Is that "30 days from now" or "same day number next month"? If the latter, then how do you handle a 31st when the next month has 30 days or fewer? (Or a 29th when the next month is February and this is not a leap year?)
This is a difficult subject.
Recurrence is especially tough to model in a database.
This is a difficult subject.
Recurrence is especially tough to model in a database.