Rosh Hashanah begins this year with sunset on Friday, September 18 and ends with nightfall on Sunday, September 20. Thus, it is acknowledged primarily on Saturday, September 19. This is the Jewish New Year, known in Hebrew as Yom Teruah, meaning day of shouting or blasting.
A custom on this day is sounding the shofar, a hollowed-out ram’s horn. This follows the Hebrew scripture’s call to raise a noise on this day. In addition to synagogue services and other special celebrations, this day includes festive meals (among many special dishes, one symbolic food is apples dipped in honey), the point being to evoke a sweet new year.
There are very exact instructions for the manner of the blasts from the shofar. The horn is blown at various instances during Rosh Hashanah prayers, with a total of 100 blasts over the day.