• (n.) Existence at the same time; contemporaneousness.
Con·tem'po·ra·ri·ness noun Existence at the same time; contemporaneousness. Howell. 
contemporary, contemporarily, contemporariness 1. Existing or occurring at, or dating from, the same period of time as something or someone else. 2. In existence now. 3. Distinctively modern in style. 4. Of the same, or approximately the same, age as someone else.