The forum time is officially GMT, Tora, since we have a large contingency in the UK. But if you say "SL time" (Second Life time, which is your time), we pretty much all know what that means. (You can all set the forum time to your own time zones, by the way, if you haven't done so already, in the User Control Panel.)
And just as you did in your example, Tora, I am planning to post the times in SLT, Eastern time, and UK time whenever I announce an event (although I don't expect the rest of you to do that). That way no one will have too many hours to add or subtract to figure out the time, unless, of course, they are in Australia. I confess, I have tried and I just can't quite get those time zones into my brain. Therefore, I am officially designating Budster Bashly as Keeper of the Australian Times. Feel free to add the time in Australia following any event announcement, Budster. If I see often enough "That's 1:30 a.m. here in Australia," I will get a better idea of what is reasonable and what isn't for you.
I agree, a rotating schedule is a good idea, especially for large group rps. I am also hoping that people will make note of who can be around when, and perhaps message one another to plan smaller rps on their own. You can send a private message to up to 5 people, and unless they have changed something, a copy of the pm will go to their e-mail.
And just to set a good example, I can be available for RP pretty much any day, pretty much any time from around 6 a.m. SLT/9 a.m. EST/2 p.m. GMT until 8 p.m. SLT/11 p.m. EST/4 a.m. GMT.
Also, I think I've figured the times correctly, but math was never my strong point. If the times seem off somehow, just let me know. My apologies to those in Australia, I didn't even try to figure that out. 