Prophet Muhammad said no one knows when the world will end, but he gave us minor and major signs. The Major Signs are ten, and he described Dajjaal(Anti Christ) on Earth, and how Jesus Christ will descend from Heaven and kill the Anti-Christ.
He(Jesus Christ) shall be a known sign of the hour, so have no doubt concerning it and follow me(Quran 43:61).
In one of the Prophet Hadith(Imam Muslim, Prophet Muhammad(may the peace and blessings of God be unto him) said the Day of Judgement will not come until we see ten major signs, the Smoke, Al-Madi(A Muslim leader), Dajjaal(Anti-Christ), Isa Ibn Mariam(Jesus Christ), Gog and the Magog, the Beast, rising of the sun from west, three Earthquake (one in the West, another in the East and last in the Arabian Peninsula).
The Prophet said Anti Christ would live in this earth for 40 days, and the first day will be like a year, second day like a month, third day like a week and the rest of the days will be like our normal days.
Prophet said, Dajjaal(anti-Christ) is a young man with twisted, contracted hair and a blind eye. He would appear on the way between Syria and Iraq, and he would cause great calamity on Earth.
He will invite people to his false religion, and those that accept it will command the sky, and the rain will fall and make the land flourish, but those that disobey, will cause drought in their Land and the people will be suffering, until Isa(Jesus Christ) descend from Heaven on a white tower around the East of Damascus by putting is palms on the Wings of two angels. He will kill the Anti-Christ and make everyone to worship Allah(God) alone.