A chem-trail blocking the sun at sunrise and sunset - all over the world - would be some feat.
What is producing these chem-trails and ho do you know that they are blocking the sun - all over the world - given that you can only be in one place at one time?
Oh dear Seb, have you been continually sleeping over the past few years and missed all the flyovers of high altitude planes spreading thick dark and light trails which accumulate into artificial clouds, sometimes as many as ten of these toxic air-planes in the sky at one time going round and round emptying their poisonous payloads then coming back to discharge more. There has been an uproar on the net but the authorities are keeping quiet about it, as are the media, which tells its own tale. Still, observers from all around the world have been complaining about it...mainly to each other because no one is listening...that includes observations made by serious scientific studies which condemn it.
The sun's uv levels are going very high and current researchers are saying that it is in a state of great distress with huge coronal holes forming and spitting out nasty high energy projections, cme's (coronal mass ejections) and threatening our magnetosphere with high levels of powerful radiation. Still...if you prefer to sleep then these things which are creeping up on us and which only the Holy Bible gives us prior warning of, and which indicate that that rogue star system, directly implied by Revelation, is closer than we might think, which leads us to the conclusion that those who are alert and looking out for these things will have a better chance of survival...especially if armed with the righteous teaching of Jesus Christ that repentance urges us to take on board.