A few links to what has been called, the worst year to be alive. The year is 536 CE.
Of course, such a judgment about which year was the worst is a bit subjective. On a personal level, each one may have their own worst year and each generation might have their own worst year that they have experienced.
And below are a couple of YouTube videos on the topic:
By way of comparison, here is a thread on scriptural indications of when Satan is cast out of heaven. See also this post and down in the post where it discusses Trumpet 2 for additional on this. (Or, if you use Chrome, this link may take you directly to that part of the post.)
An article related to Rev 16:12 (when one understands Babylon the Great to be connected with religion): Here. (If you use Chrome as a browser, you might find this link interesting. Otherwise see here, the paragraph starting with, "The pouring out of the sixth bowl ...")