The North Sea Programme seems such a well run programme, don't you think? Browsing their website today (www.northsearegion.eu), I notice that the next two calls for projects are already announced - from 1 Sept - 29 Sept and from 2 Feb - 02 Mar.
I am not so sure about their predeliction for short call times: one month seems very short for putting a co-operation project together. I imagine the response would be that is why they announce the calls so far in advance. Anyway, only 17 projects have been approved so far, so there is plenty of funding left if you're interested.