Jesus was in the desert for 40 days and 40 nights he had no food or water. After being baptized by John the Baptized, Jesus was tempted by the devil in the Judaean Desert for 40 days and 40 nights.
The Last Supper was the final meal Jesus shared with his disciples in Jerusalem it was there he told his disciples to drink his blood and eat his body in memory of him.
On Palm Sunday we remember and show respect on the day that Christ entered Jerusalem. It marks the beginning of Holy Week, the final week of Lent.
On Holy Saturday we remember and respect the day Jesus died and was placed into the tomb. People prayed waiting for Christ to rise from the dead. This is the day after Good Friday and the day before Easter Sunday.
Jesus Christ rose from the dead on Easter Sunday, the third day after His death.
Good Friday is the day Jesus was crucified. We remember and respect this day as Jesus died for our sins so our sins can be forgiven and we get go to heaven.