Riddle 3

My first is now before us, my second is here too;
My whole is now here also,--and yet that ’s not quite true.
My first is,--no, what is it? That is for you to say;
And where ’s my second, tell me, yes, tell me that, I pray,
And I will tell you truly, that though you look around,
You cannot see my whole because it ’s nowhere to be found.