Awesome idea. I joined. I'm all for this. As some people stated above. 10pm, 10am, 12pm, 12am. My suggestion is once when the sun is going up and once on the way down. 10am eastern time works for me in the morning (i get a 15 minute break from work at 9:45). I usually try to sleep before 10pm during the week so i'd do it from 5-9. I think an hour or so after dinner(6pm)time would be good. I'm liking 7pm.
If we want to do this at the same time together, i think we should use Greenwich Time because it's right in the middle of the time map (+-0hrs).
Time Zone Map
Keep on posting and we can work something out
-Josh