Question: what are the two jewish high holy days
Answer: strictly , the holidays of Rosh Hashanah ( `` Jewish New Year '' ) and Yom Kippur ( `` Day of Atonement '' ) ; by extension , the period of ten days including those holidays , known also as the Ten Days of Repentance ( Aseret Yemei Teshuvah ) ; or , by a further extension , the entire 40 - day penitential period in the Jewish year from Rosh Chodesh Elul to Yom Kippur , traditionally taken to represent the forty days Moses spent on Mount Sinai before coming down with the second ( `` replacement '' ) set of the Tablets of Stone .