no its not. the mayans just say there calander ends dec. 21 like our calanders end dec 31. theres no sign in anything that were going to have any thing that would harm us. no astroids, sun flares, powerful weather or anything. I mean you can listen to rumors but research what NASA and everyone says ! thats what I did.
No one can decide the worlds date, but it's nothing to fear, think of it this way, on the 21st, sit down with your favourite food and drink, watch some TV or Kay Games and think what I'm thinking, if I die the world isn't my problem, if I don't then I get to live longer, yay. Nothing to be scared about.
We're all bound to die one day, and that's when "the world will end" for that body... But if we ALL go extinct on the 21st? Be prepared... I never stocked up... But you shouldn't have to. If there's going to be and end to the world, let us all die knowing that we did the best we could... Have fun, man. But don't worry- You'll be fine no matter what happens.
"Prophets" and other religious people have been predicting the end of the world at various dates from time immemorial. All of them have been wrong so far. Jesus said that we must live as though the end could come at any time, "like a thief in the night", but I think He was talking about the individual end of the world we ALL face, that being our death. So, no, the world is not going to end--except for some people.