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What are the specific time windows you can work with? Also, regarding Sunday, my flight is early on the morning so I can try Sunday afternoon or evening my time if that works.
One thing I messed up a bit, my timezone changed from gmt+11 to gmt+10 (made this mistake earlier). I believe 7pm gmt+11 is the same as 6pm gmt+10. Would you go for that time or 7pm gmt+10?