[Remind-Fans] N-day period reminders counting from specific date

[Vitezslav Cizek]

* V Středa 12. září 2012, 10:12:31 [CEST] Matous Jan Fialka napsal:
> Hello.
> 
> I have a regular payment I have to pay in 30-day period starting
> from a specific date I first payed it. I would like to be reminded
> 3 days before the date. How do I write such remind rule?
> 

If I understand it right (it happens every 30 days)
a simple rule like this can work:

REM 12 Sep 2012 *30 +3 MSG Payment