The Mitzvah of blowing the Shofar is the central commandment of the Jewish New Year, Rosh Hashana, it is blown in all synagogues during the morning services, Shacharit, on both days of the holiday.
For those that can’t come to the synagogue, Rabbi Lazar reaches out during the afternoon to the Jews in the area and towards the evening anybody who didn’t have a chance to hear the Shofar is invited to come hear the Shofar at Chabad.