I don't know for sure, the counting system just recently changed, like w/n the last week (it was suppose to change eariler, but they messed up), so I dont know if anyone knows exactly how it works out. If you hold back 20 days, and do the math forward, at the end of their 4th full season, they'll have enough days to give them 2 full additional seasons. So I don't know if you'd get that 3rd arb season or not. IIRC, 25 days was the needed time to be safe, but I could be off by a day or 2 in either direction.