Note 2735 — Chapter XXIX · LATIN ASTROLOGY AND DIVINATION: ESPECIALLY IN THE NINTH, TENTH, AND ELEVENTH CENTURIES
Reading edition
Harleian 3017, 10th century, fols. 63r-64v, CLM 6382, 11th century, fol. 42, Supputatio Esdrae; Incipit, “Kal. Jan. si fuerint dominico die hiems bona erit.”
Vatican, Palat. Lat. 235, 10-11th century, fol. 39, “Subputatio quam subputavit Esdras in templo Hierusalem,” opening, “Si in prima feria fuerint kl. Ianuarii hiemps bona erit.”
Also found in Egerton 821, fol. 1r, which is of the twelfth century and adds a more elaborate method of divination according to what planet rules the first hour of the first night of January and which of its 28 mansions the moon is in.
CLM 9921, 12th century, fol. 1, is a calendar with verses beginning, “Jani prima dies et septima fine timetur.”