article_snippet.sent: It's definitely a progression, although the word itself -- triduum -- can refer to any three days of prayer.
article_snippet.sent: But the really interesting thing is that we all experience the pattern of the three days again and again.  
article_snippet.sent: I suspect we all experience the Triduum frequently, sometimes more than once in a single day.  
article_snippet.sent: It's a pattern that describes a kind of spiritual progression.   