#2 is a weak argument imo. Theres a 4 hour time difference across the country and everyone has different work/life schedules.
Mike, if you call me at 9am your time, without first arranging with me that is the only time you have available, I'll cut your dialing fingers off But most likely, my phone will be on silent or vibrate, and you won't get a response until much later when I'm awake