Does this have to be on a Thursday?
Does time of day have anything to do with this? This thread has suggested 10AM, 1:30PM and 8PM has alternatives (I assume server time). I missed the 10AM attempt. I'm not sure where people are getting the time of day information from either.
I don't dispute that the answer is in here, but, there's still a lot of combinations to try, plus clearly some misinformation as well.
I have done all but 'd)' in santogold post above already. As I didn't know about this 10AM thing, and now that it's 8:20PM server time, if time of day means anything, I guess that opportunity is done for today (or for the week?).