Arrival of Imam Mahdi

Arrival of Imam Mahdi. (Is 21st Dec the end of the world?)
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1.WHY I AM WRITING THIS
2.QURAN AND HADEES REGARDING IMAM MAHDI
3.IMAM MAHDI AND HIS LIFE ACCORDING TO HADEES
4.DAJJAL
5.Hazrat Esa(AS)
6.HINT OF IMAM MAHDI'S YEAR OF COMING
7.People claiming to be the Mahdi

1.WHY I AM WRITING THIS:
The term "MAHDI" is a title meaning "The Guided one".
I am writing this topic for 2 reasons.
1st..as we all know that according to an ancient race. End of the world is coming soon. (infect in this month)
2nd. Today when ever we see a pic of a child with 1 eye...we are saying that dajjal is here. Same like that we have this habit to make Imam Mahdi every now and then. Then some ppl are saying that Dajjal is not a person but a social system. Same like that some alim thought that imama mahdi is not a particular name but every era will have a mahdi in it..and because of that many ppl called them mahdi or when ever there is an earth quick, we associate it with Imam Mahdi's signs.
So thats why i thought to write a complete article about Imam Mahdi.
First thing first...Imam Mahdi is a person. There are more then 200 hadees regarding imam mahdi..there are musalsal..sahi..hasan and zaeef haddeses too. Imam Qurtabi, Imam Muzzi, Imam Nabvi, Imam Jozi, Imam Sakhavi, Mulla Ali kari, Imam Zarkani, imam qustalani and many more called hadees about Imam Mahdi as Mutwatar(matwatar are hadees which according to shariah are necessary to believe)
Imam mahdi's arrival is one of the sign of day of judgment. and it is the first major sign among 12 in the 3rd era of signs of Qiyamat.(Rasool Allah (SAW)'s death was the first sign and death of all ashaba was also one of the sign (mentioned in Masnad Imam Humbal).
Events that when Imam Mahdi will come will not take place like a magic..world's powers will be break and reunite in the way that muslims will be a big power. Dajjal will come in the life time of Hazrat Mahdi and Hazrat Esa (AS) will come after that.
Imam Mahdi and Hazrat Esa Both will fight against Dajjal and kill him.
Ahlay tashree (Shia) think that he has born and then disappeared.
Ahlay sunnah think that he is yet to be born and will come.