The seven feasts of the LORD, all having to do with 'Father, Son, and Holy Spirit'. (1.) Passover, the death of Christ for the sins of mankind in the 1st Biblical month. (2.) Unleavened Bread, shows that GOD has zero tolerance for sin, the 1st Biblical month. (3.) First fruits, the resurrection of Christ, and the first fruits of the barley harvest, when He took those that rose with Him on the third day, the 24 priests, whose names were used for the priestly courses/the 24 elders, to heaven and waved them, the wave sheaf offering, before his Father in the 1st Biblical month. (4.) Weeks/Pentecost, the birth of Christ in the 3rd Biblical month, 9 months after His conception in the 6th Biblical month, and the giving of the Holy Spirit. (5.)
Trumpets, the rapture of the church at the beginning of the seven year tribulation in the 7th Biblical month. (6.) Day of Atonement. Also the beginning of the 50 year Jubilee cycle in the 7th Biblical Month. (7.) Tabernacles, including the 8th day, in the 7th Biblical Month.
The two feasts in the Bible that have to do with 'John the Baptist'. (1.) Purim, the conception of John in the 12th Biblical month. Esther 3:13. (2.) Dedication/Lights/Hanukkah, the birth of John in the 9th Biblical month, after his conception in the 12th Biblical month. Right after Jesus speaks with the Pharisees and the Sadducees at the feast of Dedication, which is only mentioned in the gospel of John, a man with the same first name, John, the Baptist is mentioned. John 10:22, 39-40. In the book of Esther the Jews were saved by a decree written in the 3rd Biblical month. Esther 8:8-12. In the birth story of Christ, children are killed. In the Hannukah story, Antiochus the 4th killed Jewish Children. Hannukah lasts for eight days. John is of the eighth priestly course of Abijah. First Chronicles 24:10. The book of Esther does not mention the name of GOD, and Purim is not a feast of the LORD. Jesus attended the feast of Dedication, and it is not a feast of the LORD. Both are celebrated in Scripture and have significance.