¡HAPPY HEADDRESS OF THE NEW YEAR!

WIKIPEDIA: Halakha (Jewish law) rules that the Rosh Hashana shofar blasts may not be sounded on Shabbat, due to the potential that the ba'al tekiah (shofar sounder) may inadvertently carry it, which is in a class of forbidden Shabbat work. Originally, the shofar was sounded on Shabbat in the Temple in Jerusalem. After the temple's destruction, the sounding of the shofar on Shabbat was restricted to the place where the great Sanhedrin was located. However, when the Sanhedrin ceased to exist, the sounding of the shofar on Shabbat was discontinued.