Shavuot 2018 will begin in the evening of Saturday, May 19 and ends in the evening of Sunday, May 20.
Shavuot (The Festival of Weeks) is celebrated after the counting of a week of weeks (49 days) from Passover. It is one of the three Jewish pilgrimage holidays. Shavuot commemorates the giving of the Law on Mt. Sinai to the newly freed Israelites after their exodus from slavery in Egypt.