You’re off. The Feast of Weeks/Pentecost was in May. Will not be in July.
Read Leviticus 23:15-16 again and then forget what your church/ synagogue/ calendar says... Tamuz 29 is the 50 days after the seven sabbath after the wave sheaf( Nisan 16).. when you get wisdom from His word about His true Sabbaths( not always Saturday or Sunday) you will be able to free your mind from traditions of men...the church has its own birthday wrong? Who would gain from that?