The Bible teaches the end of the age. I was one of the ones who thought that the end of the age was December 21st... Made a lot of sense, not sure if it was or not, but pretty sure we would know, I would think... perhaps not. That was the official "end of the age" It was created by the ancient mayans or whoever... They say their God, Itzamna, the "Sun God" came down from heaven and dwelled among them and taught them the orbits, solar systems, etc. and helped them with farming, agriculture, and the calender system ( Sounds a lot like our God Yahweh, in my opinion).
...but December 21st came and went without anything happening, as far as we know, so I guess that was wrong
Would we really know if it came, as the average Christian...??? Maybe, maybe not. A new heavens and a new earth... new heavens means new spiritual laws, authorities, and all authority on earth being returned to the heavens... Well, don't have any, not sure who has anoiting and authority, pretty sure there are still some not willing to give up their "spiritual gifts", as for a new earth... no idea what that could mean.