Call this day a holiday, even the biggest holiday - too little. It is more important than any of the holiday and the significance of any event in the history of the world. On this day all of humanity, so - each of us got a hope of salvation, because Christ is risen. This day is called the Passover, that means - "transition", and is celebrated in the Orthodox Church as the most important day of the year. In Easter - the essence of Christianity, the whole point of our faith.