I'm in the US, EST (near New York and anything south of it), and right now (just as a measure) it's about 10:30 AM here. For someone living in California (ie, PST), it'd be more like 7:30 AM. EST is GMT-5, if you want to be precise.
Those times will likely work fine for me, I don't have class after 3 PM on Fridays. You're probably best off trying it on a weekend night, but if that's busy for you (which I can understand) then yeah, Fridays are likely your only other option.