Easter derives it’s name from Ēostre or Ostara which means “dawn” in the ancient Germanic language. In the old Germanic and Anglo-Saxon tradition the mythical goddess Ostara was celebrated as “spring” at the time of the spring equinox. Ostara represented the sunrise, spring-time and the renewal of life.
Easter is still celebrated on the Sunday immediately following the Paschal full moon(the first full moon of official spring according to the Gregorian lunar calendar). It is believed that three days after his crussification, Christ came back to life. Easter Sunday marks his resurrection. His death is commemorated on Good Friday, the Friday just before Easter.