World Marriage Day takes place on February 11, 2018. World Marriage Day is an observance sponsored by American organisation Worldwide Marriage Encounter, associated with the Catholic Marriage Encounter movement and observed on second Sunday of February each year. Its purpose is declared to be: "World Marriage Day honors husband and wife as the foundation of the family, the basic unit of society. It salutes the beauty of their faithfulness, sacrifice and joy in daily married life.
Marriage - also called matrimony or wedlock - is a social union or legal contract between people called spouses that establishes rights and obligations between the spouses, between the spouses and their children, and between the spouses and their in-laws. The definition of marriage varies according to different cultures, but it is principally an institution in which interpersonal relationships, usually intimate and sexual, are acknowledged.
People marry for many reasons, including: legal, social, libidinal, emotional, financial, spiritual, and religious. Marriages can be performed in a secular civil ceremony or in a religious setting. The act of marriage usually creates normative or legal obligations between the individuals involved. Marriage is often viewed as a contract. (With material from: Wikipedia)