Easter, a key Christian holiday, celebrates Jesus' resurrection. Holy Week precedes it, featuring events like Palm Sunday and Good Friday. Western and Eastern Christianity observe Easter differently, with varying traditions like sunrise services, Easter eggs, and the Easter Bunny. Its date is moveable, set by the lunisolar calendar, determined after the first full moon post-vernal equinox, as established by the First Council of Nicaea (325 AD). Easter is linked to Passover, reflecting its historical and theological roots. The term "Easter" may derive from the Anglo-Saxon goddess Ēostre, while "Pascha" connects to the Jewish Passover. https://en.wikipedia.org/wiki/Easter