Easter Week is the week beginning with the Christian feast of Easter and ending a week later on Easter Saturday.
The term is sometimes inaccurately used to mean the week before Easter, which is properly known as Holy Week.
The first day of Easter Week is called Easter Day or Easter Sunday, the other days in the week may be designated according to the following pattern:
Monday in the octave of Easter
Tuesday in the octave of Easter, etc
Easter, as the most important celebration in Christianity, was observed for a week, and it still is celebrated in the liturgy of the Roman Catholic Church and Anglicanism with an octave.
However, owing to modern working patterns, many Easter celebrations in alternative Christian denominations now occur on Easter Sunday and Easter Monday only.