According to The Iran Project,The ceremony of "Palm Sunday" or Eid al-Sha'anin was held on Sunday evening (Farvardin 5, 1403) in the Holy Gregor Church in Tehran. "Palm Sunday" symbolizes the arrival of Jesus (pbuh) to Jerusalem. Eid al-Sha'anin is celebrated every year on the Sunday before Easter, and Christians in different countries of the world celebrate this day.