Here is the schedule:
3 June: Ahmadinejad-Mousavi
4 June: Mousavi-Rezai
6 June: Ahmadinejad-Karoubi
7 June: Karoubi-Mousavi
8 June: Ahmadinejad-Rezai
All debates are at 14:00 US Eastern Standards (or 2:00 PM) until 3:30PM at IRTV3