Prolly this evening at their normal opening time of 19.30, then I'm tenatively guessing that tomorrow things will be open there at the usual time. So 10 am until... oh, I dunno. Is it 10 pm?

I can tell you today, when I popped into Villaggio, that Virgin wasn't open, as was the case of most of the shops. However, that's normal Friday pattern, not Ramadan-specific.