Father's Day
Father's Day, is observed on the feast day of Fathers. It is celebrated as a public international day, like in many other countries including the U.S., on the third Sunday of June.
In Greece, like in other European countries, this day is named (Fête des Peres/Feast of Fathers)
Mother's Day
In Argentina, Mother's Day is celebrated on the third Sunday of October. The holiday was originally celebrated on 11 October, the old liturgical date for the celebration of the Maternity of the Blessed Virgin Mary but after the Second Vatican Council, which moved the Virgin Mary festivity to 1 January, the Mother's Day started to be celebrated the third Sunday of October because of popular tradition. Argentina is the only country in the world that celebrates Mother's Day on this date.