The Daily Office SSF: New Revised Edition

Quite a staggering work

I had no idea the liturgy of the church was so complex.
It's fascinating to try to work out what the order of service is for any given day. I'd say it's virtually impossible without a great deal of study and analysis.
I'd be very interested in understanding the principles used for determining what is to be included in each office on each day, but I doubt anything regarding that will ever be published...