Shavuot, or Shvu'es in some Ashkenazi usage, commonly known in English as the Feast of Weeks, is a major Jewish holiday, one of the three pilgrimage festivals, that occurs on the sixth day of the Hebrew month of Sivan. In the Bible, Shavuot marked the wheat harvest in the Land of Israel. In addition, rabbinic tradition teaches that the date also marks the revelation of the Ten Commandments to Moses and the Israelites at Mount Sinai, which, according to the tradition of Orthodox Judaism, occurred at this date in 1312 BCE. The word Shavuot means "weeks", and it marks the conclusion of the Counting of the Omer. Its date is directly linked to that of Passover; the Torah mandates the seven-week Counting of the Omer, beginning on the second day of Passover, to be immediately followed by Shavuot. This counting of days and weeks is understood to express anticipation and desire for the giving of the Torah.
Hebrew names of Jewish holy days
Tabernacle and Temples in Jerusalem