John 7: 7 After these things Jesus walked in Galilee: for he would not walk in Jewry, because the Jews sought to kill him. 2 Now the Jew's feast of tabernacles was at hand. 3 His brethren therefore said unto him, Depart hence, and go into Judaea, that thy disciples also may see the works that thou doest. 4 For there is no man that doeth any thing in secret, and he himself seeketh to be known openly. If thou do these things, shew thyself to the world. 5 For neither did his brethren believe in him. 6 Then Jesus said unto them, My time is not yet come: but your time is alway ready. 7 The world cannot hate you; but me it hateth, because I testify of it, that the works thereof are evil. 8 Go ye up unto this feast: I go not up yet unto this feast: for my time is not yet full come.
Yeshua knew that the understanding of the feasts and their prophetic message would get the people's hopes up for the Messiah, but as He said it wasn't His time to come as ben David, for that is for the second coming. He came as ben Joseph, who is be the suffering servant and fulfill His role with the first coming in the Spring Feasts.
Mark 14:41 And he cometh the third time, and saith unto them, Sleep on now, and take your rest: it is enough, the hour is come; behold, the Son of man is betrayed into the hands of sinners.
Luke 9:51 And it came to pass, when the time was come that he should be received up, he stedfastly set his face to go to Jerusalem,
Matthew 26:18 And he said, Go into the city to such a man, and say unto him, The Master saith, My time is at hand; I will keep the passover at thy house with my disciples.
Yeshua knew which prophetic feasts He was going to keep with His first coming and which ones He will keep with the second coming. I even marvel, He knew which year He would start His ministry, and when He would end His ministry.