Tks, guys. It was a newbie "mistake". I chose digital clock in the PMDG SETUP. Just a few clicks (PMDG Setup / Aircraft / Equipment / Pg 4/13) and it was there.
Like I wrote above this PMDG 777 is absolutely terrific. And reading FCOMv2 (with so many pages) is a MUST.
BTW these manuals can be bought?