I don’t take things lightly but I think this is an example of some people being impressed too easily. There were many other tetrads that you guys didn’t list, and even the ones you did list weren’t when you say they were. The 1948 one for example was in 1949-1950. The 1492 one was in 1493-1494.
When moshiach comes, we will find out from an internet post or a TV braodcast, not some nerdy astronomy event :p