Monday was Jesus’ triumphal entry into Jerusalem (Matt. 21:1-9; Mark 11:1-10; Luke 19:28-40; John 12:12-19), His visit to the temple (Matt. 21:10-11; Mark 11:11), and then His return to Bethany. The day of the triumphal entry would be Nisan 10 when the lamb was selected for Passover. Hence, the triumphal entry was the day when Christ presented Himself as Israel’s Paschal lamb.
[Harold W. Hoehner, Chronological Aspects of the Life of Christ, 91]