Question

if earth is 4.6 billion years old then why we are in 2017 ??

Answer 1

its talking about when it was formed

Answer 2

Earth formed 4.6 billion years ago but there had no life expections.

After billion years plants grown in water and then to earth.

All natural resources formed.

We are in 2017 now and in 2018 after 2 days because it's new Era.

Before 0 AD there was BC before Christ birth.

So it's philosophy.......

Hope it's helpful to u.