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Hello, I am GMT-4, so I could do anytime from now to 10pm my time today; if not, I could do any day from Tuesday-Friday at 1:40-3pm my time. I could also do Saturday afternoon or Sunday until 1pm my time.
Okey then, tell me your PS nick and I'll chall you there between 8am and 9am your timezone, lunch time in Spain :)
(I think 7am is too early for you,, and obviously I can have lunch earlier or later, but it's complicated to wake up and play a competitive game at this hour)