Shavuot is the last of the pilgrimage festivals, when enumerated from the beginning of the Jewish year, falls seven weeks after Passover (6 Sivan), at the end of the barley harvest and the beginning of the wheat harvest.
The Bible (Deut. 16:10) describes this occasion as the festival of weeks (Heb. shavuot), for so is it counted from Passover, and as the occasion on which new grain and new fruits are offered to the priests in the Temple. Its additional definition - the anniversary of the giving of the Torah at Mt. Sinai - is of rabbinical origin. Shavuot is observed among the Orthodox with marathon religious study and, in Jerusalem, with a mass convocation of festive worship at the Western Wall. In the kibbutzim, it marks the peak of the new grain harvest and the ripening of the first fruits, including the seven species mentioned in the Bible (wheat, barley, grapes, figs, pomegranates, olives and dates).