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 (United States)
On May 10, 1913, the U.S. House of Representatives passed a resolution calling on all federal government officials (from the president down) to wear a white carnation the following day in observance of Mother's Day. On May 8, 1914, the U.S. Congress passed a law designating the second Sunday in May as Mother's Day and requesting a proclamation. The next day, President Woodrow Wilson issued a proclamation declaring the first national Mother's Day as a day for American citizens to show the flag in honor of those mothers whose sons had died in war. In 1934, U.S. President Franklin D. Roosevelt approved a stamp commemorating the holiday.