I dont know a source, maybe my fellow CRers can help me here, but I’ve heard a few times that a lunar eclipse is a bad sign for the Jews
It should be noted that lunar eclipses happen about twice a year somewhere on the earth, and can be predicted centuries in advance. Now this eclipse will be total and deeper than many so it should be quite a site, and at least as of now (6:35 pm Israel time) the sky looks clear so I hope it will be worth watching.
NASA has a very good eclipse page with info on every eclipse for the next 10-20 years at least.
My only regret is that my 4 year old is too young to stay up and watch it with me. Oh well it will wait for the next one