Mark 14:1-2
1 The passover and the festival of unleavened bread fell two days later; so the high priests and scribes were trying how to get hold of him by craft and have him put to death. 2 "Only," they said, "it must not be during the festival; that would mean a popular riot."
Luke 22:1-2
1 Now the feast of unleavened bread which is called the passover was near. 2 The high priests and scribes were trying how to get him put to death (for they were afraid of the people),