1. Rosh Hashanah is the birthday of the universe, the day God created Adam and Eve, and it’s celebrated as the head of the Jewish year.
2. It is celebrated on the first two days of the Jewish new year, Tishrei 1 and 2, beginning at sundown on the eve of Tishrei 1. Rosh Hashanah 2020 begins at sundown on September 18 and continues to September 20.
3. It is celebrated by Candle lighting in the evenings, prayer services, festive meals with eating sweet delicacies during the night and day.
4. At the prayer services the ram’s horn (shofar) is sounded on both mornings.
5. As the horn is being blown, you are to think about your actions in the past year, repent, start afresh etc.
7. The following week is regarded as a period of reflection (although normal life resumes), culminating next weekend in the festival of Yom Kippur – a 25-hour fast during which ‘repenting’ becomes important.
8. Many Jews who converted to Catholicism still celebrate these Jewish festivals.
9. It is traditional to say Shanah Tovah Umetukah (Hebrew: שנה טובה ומתוקה), meaning "A Good and Sweet Year".
10. Traditionally, apples, honey and bread (Challah) are eaten - You can find some easy recipes here: https://www.chabad.org/recipes/recipe_cdo/aid/4323/jewish/Rosh-Hashanah-Recipes.htm