why do people celebrate Rosh Hashanah? Welcome to solsarin, This article on Solsarin is going to give you some information about “why do people celebrate Rosh Hashanah”. Rosh Hashanah Rosh Hashanah (Hebrew: רֹאשׁ הַשָּׁנָה), literally meaning “head [of] the year”, is the Jewish New Year. The biblical name for this holiday is Yom Teruah (יוֹם …