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I'll tentatively say ok to that. But I will be living away from home so there's a possibility I might be having to do other things at that time. 9pm onwards will definitely be okay. But I'll try to make it so that I'm available at 4
around the same times - my afternoons are mostly taken up but I'm free late mornings and late evenings. Will you be readily available between 9 and 11:30 PM your time? If I'm available then I'll let you know.
prob going to wait ~30 more min and then head out. I'll more likely than not be able to make it toward the end of your time range, so it should be fine.