In the Martyrologium Hieronymianum they are mentioned under 6 January; Usuard, Ado, Notker of St Gall, and others place them under the ninth, and Rabanus Maurus under the thirteenth of the same month, while Vandelbert puts them under 13 February, and the Menology of Canisius under 21 June, the day to which the Greek Menaea assign St. Julian of Caesarea.