My first is present – future's past –
A time in which your lot is cast.
My second is my first of space
Defining people's present place.
My whole describes a lack of site –
A place without length, breadth, or height.
This is a charade. You have to find out two words and combine them to form the third. Confused? Suppose that my first is pointing towards 'off' and my second is pointing towards 'ice', then my whole will combine to form 'office'.