Father's Day is a celebration honoring fathers and celebrating fatherhood, paternal bonds, and the influence of fathers in society. Many countries celebrate it on the March 19 or on the third Sunday of June, but it is also celebrated widely on other days.
In the Roman Catholic tradition, Fathers are celebrated on Saint Joseph's Day, commonly called Feast of Saint Joseph (Step-father of Jesus of Nazareth/Jesus Christ), March 19, though in certain countries Father's Day has become a secular celebration. It is also common for Catholics to honor their "spiritual father," their parish priest, on Father's Day.
Though Father's Day is not an Indian tradition, it is celebrated in India on the third Sunday of June. However, Pitru Amavasya is the day when Hindus honour their familial elders during Pitru Paksha (fortnight of the ancestors).
Father's day in Iran is celebrated on the 13th of Rajab, on the birth anniversary of Imam Ali, the first Imam of Shia Muslims; which looks more like a Muslim religious day than ancient Persia founded by real Persian ancestors. It is an occasion to complement mother's day and to celebrate fatherhood.
In Haiti, Father's Day (Fête des peres) is celebrated on the last Sunday of June. Fathers are recognized and celebrated on this day with cards, gifts,breakfast, lunch brunch or early Sunday dinner; whether enjoying the day at the beach or mountains, spending family time or doing activities that make Dad happiest, its all about Dad. Children exclaim "Bonne Fête Papa!", while everyone wishes all fathers "Bonne fête des Pères" (Happy Father's Day).
Font: Internet, http://en.wikipedia.org/