Father's Day is a holiday honoring fathers and fatherhood that is celebrated on various days around the world. In Catholic Europe, Father's Day has been celebrated on March 19th, the Feast Day of Saint Joseph, since the Middle Ages. This tradition was brought to Latin America by the Spanish and Portuguese, where it is still celebrated on March 19th in many countries. In the United States, Father's Day was established in the early 20th century to complement Mother's Day, and is now celebrated on the third Sunday of June. The spelling of Father's Day in the United States uses the apostrophe s rather than the plural fathers' as was originally used by its founder.

1. Father's Day

2. • Father's Day is a celebration honoring fathers and celebrating
fatherhood, paternal bonds, and the influence of fathers in society.
In Catholic Europe, it has been celebrated on March 19 (St.
Joseph's Day) since the Middle Ages. This celebration was brought
by the Spanish and Portuguese to Latin America, where March 19
is often still used for it, though many countries in Europe and the
Americas have adopted the U.S. date, which is the third Sunday of
June. It is celebrated on various days in many parts of the world,
most commonly in the months of March, April and June. It
complements similar celebrations honoring family members, such
as Mother's Day, Siblings Day, and Grandparents' Day.

3. History and traditions
• A customary day for the celebration of fatherhood
in Catholic Europe is known to date back to at least the Middle
Ages, and it is observed on 19 March, as the feast day of Saint
Joseph, who is referred to as the fatherly Nutritor
Domini ("Nourisher of the Lord") in Catholicism and "the putative
father of Jesus" in southern European tradition. This celebration
was brought to the Americas by the Spanish and Portuguese, and
in Latin America, Mother's Day is still celebrated on 19 March.
The Catholic Church actively supported the custom of a
celebration of fatherhood on St. Joseph's day from either the last
years of the 14th century or from the early 15th century,
apparently on the initiative of the Franciscans.

4. In the United States
• Father's Day was not celebrated in the US, outside
Catholic traditions, until the 20th century. As a civic
celebration in the US, it was inaugurated in the early
20th century to complement Mother's Day by
celebrating fathers and male parenting.

5. Spelling
• In the United States, Dodd used the "Fathers' Day" spelling on her
original petition for the holiday, but the spelling "Father's Day" was
already used in 1913 when a bill was introduced to the U.S.
Congress as the first attempt to establish the holiday, and it was
still spelled the same way when its creator was commended in
2008 by the U.S. Congress.