All Seven Sacraments flow from Christ, the head of the Church which is the visible Body of Christ present in our world.
Jesus promised, "I will be with you until the End of Time". Jesus has Risen and is living, though invisible, among us.
All of the Sacraments are the ongoing ministry of Jesus who is alive and living - but visible in the physical form of the celebration of the Sacraments.
Briefly,
Without Jesus present, none of the rituals of the Sacraments would have any effect or power at all.
In our parish of St. Augusta, the Sacraments are available at various times.