Coming 50 days after Passover, Shavuot marks the end of the grain harvest and the anniversary of the giving of the Torah at Mount Sinai. Shavuot is also one of the Shalosh Regalim, the three pilgrimage festivals which include Shavuot, Sukkot, and Passover. Jews celebrate Shavuot by staying up late into the night learning Torah and eating (sweet) dairy foods.