Everytime I read this, I get incredibly unnerving chills up and down my spine because of how this supposed "poetic nonsense" (as a secular reader would put it) actually makes sense.
From the way I interpret it, the sun somehow goes "black as sackcloth made of hair". That would mean that the sun effectively "burns out", but continues to exist likely as some sort of dwarf star too faint to be effectively seen. With the whole moon becoming "like blood", it makes me think of a lunar eclipse. During a lunar eclipse, the moon generally appears a rusty red color because of the lack of light reaching it. Well, if the sun is drastically dimmed, the moon is going to appear red.....like blood.....When the stars are apparently falling onto the earth, it makes me think of meteor showers on steroids, where meteorites are actually repeatedly striking the earth. Earthquakes and cataclysmic destruction from space debris is inevitably going to be massively wrecking the landscape, as stated by mountains and islands being moved from their places. People of all classes abandon their societies and ranks and hide together in isolated areas just to stay alive and avoid the destruction as they try to escape the Second Coming that they were obviously very ill-prepared to face.
Unfortunately it's not feasible if you accept physics.
The sun will expand first, before it ever dims. In expanding it will engulf Mercury and potentially Venus and Earth. If the Earth survives the expanse then it will be burnt to cinders. A red giant is not as hot as our sun, but it will be closer, baking us and probably stripping off our atmosphere and water.
By the time the sun shrinks again, Earth would be no more.
We also know that it will take millions of years. It will take far longer than humanity has existed (whether by biblical or scientific measuring) for it to occur. So, no, the end is not nigh.
You're practically guaranteed to match events across the world with descriptions of Seals 1-5, but number 6 requires soome pretty damning evidence of happening. I'd settle for nothing less than the deestruction. in the film 2012.
By the way, does it not seem a bit distasteful to spin some fearmongering out of a tragic attack like Brussels?