Well the simple answer to that is that many Christians would call it Holy Friday or Great Friday, when they celebrate the (is that truly the right word to use?) crucifixion of Christ. All now is quiet and solumn until Easter Sunday and the resurrection.
Britain, has a public holiday, but everthing remains open for business, or rather the main supermarkets, DIY stores etc obviously it couldn't simply shut up shop, so to speak, for the fear of offending the masses. As for banning the sale of alchohol on this day, well it wouldn't happen though it would be interesting as a social experiment.
I am enjoying a day off, catching up with paperwork, tidying up and sorting things out. For once it isn't raining, and the sun is shining in though rain doesn't look too far away :-(
Have a happy Easter everyone, don't overdose on the chocolate eggs on Sunday