1.     Father’s Day was first celebrated in America in Spokane, WA, on June 19, 1910, making today the 102nd anniversary of the holiday. Sonora Smart Dodd, one of six children raised by single father William Jackson Smart in Spokane, invented the modern holiday.

2.     President Lyndon B. Johnson made it a holiday to be celebrated on the third Thursday of June in 1966, but it wasn’t officially recognized until 1972, when Richard Nixon was in office.

3.     Father’s Day is celebrated on the third Sunday of June in 61 countries, by far the day the holiday is celebrated in the most countries. Those countries include Afghanistan, Pakistan, Canada, China, Cuba, Japan, Mexico, India and the United Kingdom, among many others.

4.     According to the U.S. Census, there were 154,000 stay-at-home dads as of 2010. They take care of an estimated 287,000 children and have remained out of the labor force for at least one year to care for the children while their wives go to work.

5.     There are an estimated 70.1 million fathers across the country, but only 25.3 million of them are part of married couples.