Is there a specific day when the world is going to end and how it will happen? I'm just curious and i really want to know what other people think regarding this issue.

there really is no specific day...it may be in two years, twenty years, 200 years....no one can know for sure, but if you read Revelation and some parts of the Gospels there are some signs they tell you to look out for...like, for example, lots of war and disease and natural disasters. I personally think the end of the world could be in our lifetime.