Spoilers: Third world war will start at October, to go through clueless and senseless deaths all around the world, for uhhhhhh....6 years'ish.
Then (not really sure beyond that tbh) we will have a worldwide apparition of Our Lady of Garanbandal.... something something "folks will die of shame by witnessing their sins being committed", etcetc. The antichrist will come, christians will be hunted like animals.
Demons will manifestate, wander around. Everyone will accept em as saviors, praise em, etc. Lucifer will claim victory, etc.
Then, 2nd cometh of Christ, etc, judge everyone, etc. Hell will close, etcetc. New Jerusalem, etc.
So um..... yeah. 10 years at best, 20 years at worst.