Shavuot (or Shavuos, in Ashkenazi usage; Hebrew: שבועות, lit. "Weeks") is a Jewish holiay that occurs on the sixth day of the Hebrew month of Sivan (late May or early June). Shavuot commemorates the anniversary of the the day G-d gave the Ten Commandments to Moses and the Israelites at Mount Sinai. It is one of the shalosh regalim, the three Biblical pilgrimage festivals. It marks the conclusion of the Counting of the Omer.