Feast of Weeks

First/Third month Nisan (Abib)/Sivan
April 22 thru June 10 (at evening, April 21 until evening, June 9)
June 10 (at evening, June 9 a righteous convocation)

An Israelite festival (also called Pentecost: Greek; feast of harvest; day of firstfruits) celebrated seven weeks after the feast of unleavened bread, or fifty days (the period between the barley harvest to the wheat harvest). It is a feast of thanksgiving for the completion of the harvest season.