"Easter is the most important festival in the church year: more importat than Christmas. It begins with Good Friday which is the day the Romans killed Jesus Christ, in Jerusalem, about two thousand years ago.
Two days later, on Easter Sunday, Christmas believed that Jesus returned to life.
Easter is now a Christian festival but the word 'Easter' comes from 'Eostre', the pagan godess of spring. easter Day is teh Sunday after the first full moon after the first day of spring (21st March). It is different every year , but always between 22nd March and 25th April."
Jackie Maguire - Seasons and Celebrations. Osforf: University Press, 1997, p. 6.