Fr Zed gives information about an online version of the Liturgia Horarum in Latin. I am intrigued to know if anyone has tidied up the endless errors and misprints in the 1986 version I possess. Here is an easy way of checking. Cathedra Petri, February 22, occurs both in volume II and III for obvious reasons. In 1986, in Volume II, a line is missed out of the Patristic reading from S Leo, rendering the end of the first paragraph unintelligible gibberish. In Volume II, the missing line remains in the text.
I would be very interested if someone could check that for me! I am, in both senses of the term, curious!