The following citations could probably be greatly multiplied.
BN nouv. acq. 1616, 9th century, fol. 12r.
Digby 63, end of 9th century, Anglo-Saxon minuscule, fol. 36, “Dies Egiptiachi.”
Berlin 131 (Phillips 1869, Trier), 9th century, fol. 12r.
Lucca 236, about 900 A. D., on its last 3 leaves are Egyptian days and a dream-book; described by Giacosa (1901), p. 349.
Harleian 3017, 10th century, fol. 59r, De diebus Egiptiacis qui mali sunt in anno circulo. The catalogue dates this MS as 920 A. D. but at fol. 66r the date is given as DCCClxii or DCCCClxii (962 A. D.)—a letter seems to have been erased which probably was the fourth C.
Harleian 3271, 10th century (?), fol. 121, Versus ad dies Egyptiacas inveniendas. See also Baehrens, Poet. lat. min. V, 354-6; Mommsen CIL I, 411.
Sloane 475, this portion of the MS 10-11th century, fol. 216v, Versus de significatione dierum mensis, opening, “Tenebrae Aegyptus Grecos sermone vocantur....”
Additional 22398, 10th century, fol. 104.
Cotton Caligula A, XV, written mostly in Gaul before 1000 A. D., fol. 126, a list of lucky and unlucky days for medical purposes, in Anglo-Saxon.
Cotton Titus D, XXVI, 10th century, fol. 3v.
Cotton Vitellius A, XII, fol. 39v.
Cotton Vitellius C, VIII, in Anglo-Saxon, fol. 23, de tribus anni diebus Aegyptiacis.
CU Trinity 945, early 11th century, fol. 37.
CU Trinity 1369, 11th century (perhaps 1086 A. D.), fol. 1v.
Vatican 644, 10-11th century, fol. 77r, versus duodecim de diebus aegyptiis, and a fragment “de tribus diebus aegyptiis.”
Dijon 448, 10-12th century, fol. 88, Calendrier, avec jours égyptiaques ajoutés; fol. 191, “De Egyptiacis diebus.” Bede’s De temporibus and De natura rerum occur twice in this MS and at fol. 181 is an incantation for use in fevers.
Harleian 1585 and Sloane 1975, where the Egyptian days are found with the Herbarium of Apuleius, are both 12th century but probably copied from earlier MSS.
So in Chalons-sur-Marne 7, 13th century, fol. 41, verses on the Egyptian days occur with the Ars calculatoria of Helpericus of Auxerre who wrote in the ninth century.
I have usually not noted the occurrence of the Egyptian days in later manuscripts. A few exceptions are:
BN 7299A, 12th century, fol. 37r.
CLM 23390, 12-13th century, the last item is, “Verses concerning the twelve signs and the Egyptian days.” The previous contents were mainly religious.
Cambrai 195, fol. 208; 229, fol. 56; 829, fol. 54; all three MSS of the 12th century.
Cambrai 861, early 13th century, fol. 56.
Sloane 2461, end of 13th century, fols. 62r-64v.
The verses concerning the ten plagues of Egypt contained in CLM 18629, 10th century, fol. 93, and ascribed by the catalogue to Eugenius Toletanus have, I presume, no connection with the Egyptian days. Such proved to be the case with BN 16216, 13th century, fol. 251v, de decem plagis Egyptiorum et de vii diebus, although from the fact that it follows “Precepta Pithagore” I suspected before examining it that it might have something to do with divination. But not even the Pythagorean precepts have in this case.