Rosh Hashanah is the Jewish New Year ( Credit:inpastel/ CC-BY-SA-2.0/ Flickr)Rosh Hashanah is the Jewish New Year. The holiday commemorates the world’s creation and marks the start of the 10 Days of Awe, which end with Yom Kippur. Blowing the shofar is an important Rosh Hashanah tradition (Credit: slgckgc/CC-BY-SA-2.0/Flickr)Rosh Hashanah is also marked by several traditions. They also recite prayers from the machzor, a special prayer book used only during Rosh Hashanah and Yom Kippur. Yom KippurBreaking of Yom Kippur fast (Credit: Sam Litvin/ CC-BY-SA-2.0/ Wikipedia.org)The 10 Days of Awe end with Yom Kippur, or the Day of Atonement.