**Is this similar to or the same as the Catholic Liturgy of the Hours?
Do Eastern Catholics as well as Orthodox pray it?**
**It’s comparable to the WESTERN Liturgy of the Hours. LotH is the LATIN name for these services.
One thing about this on-line Horlogion: it doesn’t contain the rich and extensive hymnody typical of the Byzantine office. How could it? There are in some 20 volumes.
And yes.
The Divine Office is common to all of the pre-Reformation Churches.**