Holy Week, ending with Easter, is the holiest time of the liturgical year, with Christ Death and Resurrection being the climax.
Easter is its own season
The Easter season.
The year starts with four weeks of advent, followed by the season of Christmas. The first day of the liturgical year is Advent Sunday.
It falls within the Christmas Season and marks the end of that season.
Lent
Ordinary Time
Advent
Easter
The year starts with four weeks of advent, followed by the season of Christmas. The first day of the liturgical year is Advent Sunday.
That's Ordinary Time. The liturgical color is green.
The beginning of Advent which varies each year
Ordinary Time.