Allways before.
36 degrease is 5 ms, and this is the timetable in the PIC.
On 36 degrease, the table is from 5 till 0 ms.
You can change this table if you need a other timetable for your ignition.
If the delay must be greater, you have to recalculate the table.
[link=http://www.sportdevices.com/ignition/ignition.htm]Ignitiontime[/link]