III. When is the Liturgy Celebrated?

From The Catechism of the Catholic Church

Life extends over all beings
and fills them with unlimited light; the Orient of orients pervades the
universe, and he who was “before the daystar” and before the heavenly
bodies, immortal and vast, the great Christ, shines over all beings more
brightly than the sun. Therefore a day of long, eternal light is ushered in for
us who believe in him, a day which is never blotted out: the mystical
Passover.³⁵

PART TWO: THE CELEBRATION OF THE CHRISTIAN MYSTERY

SECTION ONE THE SACRAMENTAL ECONOMY
- CHAPTER TWO THE SACRAMENTAL CELEBRATION OF THE PASCHAL MYSTERY
  - Article 1 CELEBRATING THE CHURCH’S LITURGY
    - III. When is the Liturgy Celebrated?

From The Catechism of the Catholic Church – rosary.team