Question

So when exactly did humans appear?

Answer 1

200,000 years ago

Answer 2

6,500,000 years have the human exsisted if you count back to the first hominids that was hafe man hafe abe.
Else we have to go back 2,500,000 years where the race homo habilis lived.
Homo sapiens is as said above about 200,000 years old yea.
But worth to mention that there was 3 "homos" before us. (Homo habilis, homo erectus and homo heidelbergensis. (homo neanderthalensis and homo floresiensis was appering the same time as hom sapiens.))

Answer 3

But to say exactly when humans appeared is hard to say, becuase that may be found some remains latter.