Even if you are a Christian, I have concluded it depends on where you are---what is your context---how aware of Holy Week and the impending Easter you are. If you are a Christian and work in a mainly secular environment, you may be relatively unaware of Holy Week. For many it does not dawn on them until at least Thursday. And of course, in the secular world there is absolutely nothing special about Thursday. But even in the secular world, Friday often assumes special connotations. It might be a holiday---a day off. It is at my College. So I suppose it is the one day Jews, Muslims, atheists, and other non-Christians are thankful for their Christian brothers and sisters! But for the Christian, Friday---Good Friday---is an interesting one. I suspect that for many Christians Friday is simply skipped. They see Easter a very special and nothing else really matters. The resurrection is key for them. Why bother with anything less....