Was Jesus' triumphant entry on a Sabbath?

Jesus entered Jerusalem riding on a colt! The Passover was preparation day for the Feast of Unleavened Bread. A 2nd Sabbath day was then on the 7th day, Saturday! If Jesus fulfilled the Passover and the Unleavened Bread by being crucified on the 14th and in the tomb on the 15th, another preparation day would be the 16th, the Sabbath the 17th and the Resurrection would be on the 18th. Therefore, the Triumphal Entry would have been on the preceding Sabbath: the 10th!