National Father–Daughter Day in the United States
National Father–Daughter Day in the United States is held on October 8. On the second Sunday of October. This event in the first decade of the month October is annual. 
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Father–Daughter Day (sometimes called National Father–Daughter Day) is a holiday recognized annually on the second Sunday of October in the United States, honoring the relationship between a father and a daughter. Unlike Mother's Day and Father's Day, it is not federally recognized.
The U.S. holiday was originally conceived by Smokey Robinson (William "Smokey" Robinson Jr. is an American singer, songwriter, record producer, actor and former record executive director.) to honor his relationship with his only daughter. In human development the relationship between fathers and sons overshadows the bond with daughters. This holiday promotes the development of young women through their father.
Similar holidays and events, festivals and interesting facts
National Daughters Day in India on September 24 (is celebrated on the 4th Sunday of September every year);
Take Our Daughters and Sons to Work Day on January 5 (Sydney, Melbourne, and Brisbane);
World Daughter's Day on January 12 (an international initiative that arose from the National Daughter Day in India);
Wiener Töchtertag or Daughter's Day in Austria on April 25 (an annual event where girls can broaden their horizons in choosing a career. The initiative of a woman adviser, Catherine Gaal, in cooperation with the Vienna Economic Chamber and the Directorate of Education in Vienna);
Töchter-Tag or Daughter's Day in Hamburg, Germany on April 26 (The Youth Education Association became the initiator in Hamburg. The idea is to introduce girls to technical professions);
Sons and Daughters Day in Germany on August 11 (The Der Tag der Söhne und Töchter a family holiday and a good time to spend time together);
National Grandparents Day in Italy on October 2 (La Festa dei Nonni);
Grandmothers' Day in Germany on October 8 (Second Sunday in October);
Grandparents Day in Hong Kong on October 8 (Celebrated since 1990 on the second Sunday of October);
Grandparents Day in Pakistan on October 8 (Second Sunday in October);
Bolivian Woman's Day on October 11 (Día de la Mujer Boliviana - the birthday of Adela Zamudio, a national pioneer in the fight against discrimination);
Girl's Day in El Salvador on October 11 (Día de la niña)