"Causes all the wicked in the world to mourn?" Honestly? The history isn't in on what the wicked did. History is written by the victors, so they thought it was "triumph!" I would imagine it was quite a bit like Germany in the 1930's and 40's though -- quite a bit of shame on the part of the people for what they saw happening and they kept quite.
Then again, we know the wicked won't all be coming to God, right? (Maybe you don't, because you're stuck on this hobby of yours.)
BUT the sun moon and stars? As in "blotted out?" Happened.
Jerusalem! They utterly and completely destroyed everyone in Jerusalem and as far as humanly possible on the structures. First they blockaded it. No food could get in and no people could get out. And they waited. And waited. The food was eaten. After the food, the rats and roaches were eaten. And then they waited a bit longer and went in to take it down.
A mother was roasting her baby to eat. They killed her and everyone else. They stacked the bodies in the temple's outer courts. Monstrous location, and yet the bodies were stacked four feet high. The gutters in the streets were ankle deep in blood. "Rivers of blood." Then they set them and it on fire. The entire city of Jerusalem was on fire. The smoke rose and blotted out the sun, moon and stars until the smoke abated. Been decades since I read this, so I don't remember how long, but no one saw the sky until there was no more fuel for the fire.
It happened. Past tense. It happened. A shame no one is taught the evilness of Man anymore. Rome tried to wipe out Christians and Jews. Thus another "great disbursement." And since Rome chased down Christians to kill them all for 200ish years, truly a Great Tribulation! Yet this travesty is covered up by lesser travesties like Stalin and Hitler.
At one point in time, they gathered the Christians to take them back to Rome. To light the way of the leader, they impaled them at regular intervals, and lit them on fire as street lamps. They'd grab another one, set him or her on fire and drag the body behind a chariot as a "headlight" for the leader's chariot. And when that body went out, they grabbed the next Christian and do it again from Jerusalem to Rome!
And what was left when they got to Rome was put into the Coliseum as sport. 30 days. (Possibly 60. Like I said it's been a long time since I read this.) 24/7 any Roman could go down to the Coliseum to watch lions eating Christians. The only problem was they had more Christians than lions, and lions don't eat when they're full. So a bunch of Christians were put in at a time, lions would eat a some, and then lie down to rest. The rest of the Christians were stuck there waiting for the lions to get hungry again. Parents comforting their children with full understanding the entire family would, eventually, be eaten by the lions. Some were stuck waiting for up to two weeks.
100,000 Christians per day for 30 days! And then they went on to try and wipe out the rest. Can you really think of anything that would be greater than that Great Tribulation?
Why did Jesus, and then John, warn the people? Because God didn't want people to lose heart when they were facing this. THEY were facing this. Why tell what someone thousands of years late MIGHT face when it was already happening by the time John got his vision? It DID happen in their lifetime. It did happen. It continued to happen for 200 years!
What? You might get someone laughing at you for being a Christian? Sure beats being lit on fire, speared and then burned in the temple, hung on a cross, beheaded, and all the other disgusting ways the Romans really did kill Christians. If you think the left scoffing at Christians is tough, then you simply don't know what tough is! And, judging by how much time you pour into this hobby of yours (because again, it really has nothing to do with God, it has to do with your comfort), you really don't have any idea how tough it can get.