Ad orientem

Ad orientem is a fancy way of saying that when people are doing religious things - like praying or singing - they might face a certain direction. This direction is usually towards the east, where the sun rises.

Some people believe that facing the east is a way to show respect to God and to remember that Jesus Christ rose from the dead on Easter Sunday at sunrise.

Ad orientem is often associated with the Catholic Church, but it's not just for Catholics - other religions have their own traditions about facing certain directions during worship.

So basically, ad orientem means facing east during religious activities. It's a way to show respect and remember important events.