When did the cannon law 1251 cvome in to effect?

Canon Law 1251, which pertains to the regulations surrounding the abstinence from meat on Fridays, came into effect on the first Sunday of Advent in 1983. This was part of the revisions made to the Code of Canon Law by Pope John Paul II, which was officially promulgated on January 25, 1983. The law emphasizes the importance of penance and the practice of abstaining from meat as a form of spiritual discipline.