Equinox

Yes, there is good news in addition to the bad news from yesterday. Some of you may already know this, but...
THERE'S GOING TO BE ANOTHER TWITTER Q&A!
This time, it's for the fall equinox, instead of the summer solstice. It will be on the weekend of September 22nd. Start thinking of questions you might want to ask, but don't send them yet! Also, RR encourages you to read his FAQ page first, in case your question has already been answered there. :)

Here's my question:
Why exactly is he doing this for the equinox? We all know that every deadline in Percy Jackson is a solstice. No one in these books really cares about an equinox! Percy's in school during the equinoxes!

But let's not complain... this is better than waiting until the winter solstice!