He went to the Tabernacle on the Sabbath, as was his custom.
Mark 2
23 And it came to pass, that he went through the corn fields on the sabbath day; and his disciples began, as they went, to pluck the ears of corn.
He kept the Passover which would have been on Thursday night.
Also Genesis chapter two says nothing about ceremonial at all but only rest, meaning it is your day to get away from the grind stone,
Mark 2
27 And he said unto them, The sabbath was made for man, and not man for the sabbath: 28 Therefore the Son of man is Lord also of the sabbath.
Ezekiel 20:12 Moreover I also gave them My Sabbaths, to be a sign between them and Me, that they might know that I am the Lord who sanctifies them.
Ezekiel 20:20 Hallow My Sabbaths, and they will be a sign between Me and you, that you may know that I am the Lord your God.
Keeping the Sabbath is a sign. Tell a friend you cannot help him move on Saturday because it is the Sabbath and you will not do work on the Sabbath. Soon everyone will know that you are "practicing Jew stuff" or something similar.
I find no Bible verses where Jesus changed the Sabbath from the seventh day to the first. Please share with me if I am wrong.