ISBN-13: 978-0943405087https://www.amazon.com/great-Horologion-Book-hours/dp/0943405084/ref=sr_1_3?dchild=1&keywords=horologion&qid=1585241879&sr=8-3
Again, this is something I would enjoy but what I would really put at the top of my want list in Orthodox resources is the Commentary of the Theophylact of Ochrid. Suggestion: Commentaries by Theophylact of Ochrid circa 1090