How historically accurate are the invocations and rituals?
For most of the ancient holidays, we have no surviving prayers or invocations. Nearly all of these rituals were created for and by the Order of the Horae. We have studied the information available to us about these holidays and deities, and we have tried both to recreate the spirit of the words that might have been said thousands of years ago, and to write something that modern Pagans would find meaningful and not overly arduous. A few of the deity invocations are amalgams of actual surviving hymns of praise. If you are familiar with the traditional sources, you will likely recognize pieces here and there. (If you aren’t familiar with the traditional sources, historical accuracy likely isn’t a deep concern of yours, so it works either way.) For most days there was not enough appropriate surviving material. We did, however, try to include accurate epithets for deities wherever possible, e.g. Zeus Horios or Aphrodite Pandemos. Therefore, if your primary need is for an academic reference