The rules of the Hebrew calendar are designed such that the first day of Rosh Hashanah will never occur on the first, fourth, or sixth day of the Jewish week (i.e., Sunday, Wednesday, or Friday).
De jiddesche Kalenner ass sou opgebaut, datt den éischten Dag vu Rosch ha-Schanah ni op e Mëttwoch, Freideg oder Sonndeg fält.WikiMatrix WikiMatrix