The month of Tishri (September and October on the Gregorian calendar) is probably the busiest time of the year for Jewish holidays. In the month of Tishri, there are a total of 13 days of special religious significance, 7 of them holidays on which work is not permitted.
These holidays include the holidays known as the "High Holidays," the most important holidays of the Jewish year: Rosh Hashanah and Yom Kippur. A 1990 survey showed that only 40% of all Jews affiliate themselves with a synagogue, but 55% attend synagogue on these holidays. If a Jew ever goes to synagogue (other than for weddings or bar mitzvahs), it is for these holidays.
