Like Phil, I wish I could give you a definite date. It really is all up in the air--no pun intended--and things tend to happen spur of the moment.
I'm sitting at work one Friday, and realize I forgot to turn my cell phone off when it rings. I run outside and it's Josh Akbar.
"What're you doing this weeked?"
"Not much. What's up?"
"I was thinking of going out this weekend. How do the airports starting around...8...sound?"
"Good by me. I'll run it by the parents and get back to you in a bit."
Simple as that. Granted, you're 1,000 miles away, but here's an idea: Try planning something with Cederholm, so you'd at least be with him for a whole day of genuine spotting. Set it around your schedule, and drop a line when the date nears to see if any locals will be around.
and visa versa is no more than a 15 minute drive. Traffic pending.