Dang. I had looked for answers to this question myself, but couldn't find any good literature on the topic. I was hoping that some voice of reason like our good Mr Bishop might have some insight for me. Painful though it can be, sometimes all we can do is accept that there is much we still don't know, such as what is happening in the region close to the sun. A reminder that the universe is still full of mystery.
Still, I have to admit to a little disappointment. Especially when superficially it would seem like we do know so much. That there will be an eclipse, for instance. And when, down to the minute, and which parts of the world will see it fully or partially...