Well since I'm a Muslim, it's natural that we follow both the Bible and the Quran.
The Quran says Jesus will reappear before the world ends, and that (as the bible says) no one will know when it will happen.
It also mentions the appearance of.... dammit, I forgot those two's names... Mahdi and.. the Dajjaal. But they have to appear over 24 hours before the ending of our world.
Oh yeah, and the Quran also says it falls on a Friday, so I'm chill.