Catechism Paragraph 2191
Part 3:
LIFE IN CHRIST
Section 2: THE TEN COMMANDMENTS
Chapter 1: YOU SHALL LOVE THE LORD YOUR GOD WITH ALL YOUR HEART, AND WITH ALL YOUR SOUL, AND WITH ALL YOUR MIND
Section 2: THE TEN COMMANDMENTS
Chapter 1: YOU SHALL LOVE THE LORD YOUR GOD WITH ALL YOUR HEART, AND WITH ALL YOUR SOUL, AND WITH ALL YOUR MIND
The Church celebrates the day of Christ's Resurrection on the "eighth day," Sunday, which is rightly called the Lord's Day (cf SC 106).