Father's Day
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.
After Anna Jarvis' successful promotion of Mother's Day in Grafton, West Virginia, the first observance of a "Father's Day" was held on July 5, 1908, in Fairmont, West Virginia, in the Williams Memorial Methodist Episcopal Church South, now known as Central United Methodist Church. Grace Golden Clayton was mourning the loss of her father, when in December 1907, the Monongah Mining Disaster in nearby Monongah killed 361 men, 250 of them fathers, leaving around a thousand fatherless children. Clayton suggested that her pastor Robert Thomas Webb honor all those fathers.
Parents' Day
Parents' Day is observed in South Korea (May 8) and in the United States (fourth Sunday of July). The South Korean designation was established in 1973, replacing the Mother's Day previously marked on May 8, and includes public and private celebrations. The United States day was created in 1994 under President Bill Clinton. June 1 has also been proclaimed as "Global Day of Parents" by the United Nations as a mark of appreciation for the commitment of parents towards their children. In the Philippines, while it is not strictly observed or celebrated, the first Monday of December each year is proclaimed as Parents' Day.