As the books used for divination at this time, "Tenmon yoroku" (astrological digest), "Shinsen Onmyo sho" (New edition of the book of Onmyo), "Teiran", "Tenmon roku" (astronomical records), "Tenchi zuisho shi," "Shishosukuyokyo," "Senji ryakketsu," and "Rekirin" were known.
なお、この時占いに用いられた書として『天文要録』・『新撰陰陽書』・『帝覧』・『天文録』・『天地瑞祥志』・『指掌宿曜経』・『占事略決』・『暦林』などが知られている。