try this drive link
That worked. Thanks. This is what I got from it.
How can it be a siman for peranyos if lunar eclipses can be predicted? He answers that it's just a siman that Hashem is looking to give peranyos. If someone has aveiros then there's an extra bad punishment.
He wonders if it affects globally and if it only affects if you can see it.
He then goes on to say what type of aveiros someone should be worried about.
Goes on a tangent that parshas shekalim (the current week the shiur was said) has two things that you can learn from it. One, that someone is worthy of being counted. Even if he's not the greatest person in the world. Two, something that it's kesef kippurim and that can only be said if you consider yourself a somebody. (I didn't understand what the difference is from one.)
He brings in r yochanan Ben zakai and achiya hashiloni after the first reason to show you don't need to be the greatest.
Goes on to parshas zachor. This is around halfway through.
Goes on to a lot of things that I can't type up quick enough.
Comes out that the type of stuff you need to be worried about by an eclipse is the beartah hara mikirbecha. Something internal to each individual.
I'm not sure what he's referring to exactly. He might be referring to the first thing he mentions when going into parshas zachor that amalek was the first to bring sfeikos into the world. And all kfira can be attributed to them. (I thought Hashem did everything so it can be explained naturally if you want i.e. ruach kadim aza kol halayla?)
Ends off that there's an inyan of delaying mashiach so people should be zoche to greet moshiach. And it's not a stira to achaka lo bchol yom sheyavo. That's what achishena can mean
ETA: the original question about how can it be a siman if it's predictable? I remember hearing an answer to it but forgot it. I don't think it's what he said.