What are the three major events of Easter?

Immediately leading up to Easter is Holy Week, which begins with 1) Palm Sunday celebrating Our Blessed Lord's triumphant entry into Jerusalem; followed by 2) Holy Thursday, celebrating the Last Supper and the institution of the Eucharist and the Priesthood. Then 3) Good Friday follows with Our Blessed Lord's Passion and Death on the Cross. Finally, 4) His burial and laying in the tomb on Holy Saturday. Also, including in Holy Week is the Chrism Mass which is supposed to be celebrated on Holy Thursday morning, in which the Bishop of the diocese, in union with all his priests, blesses and consecrates the Oils (Sacred Chrism, Oil of the Sick, and Oil of Catechumens) for use for the entire diocese throughout the year.