A day set apart in many countries for honouring fathers, observed on the third Sunday in June in the US, UK, and Canada. The idea for a father's day originated with Sonora Louise Smart Dodd of Spokane, Washington, USA, in 1909 (after hearing a sermon on Mother's Day), and through her efforts the first Father's Day was celebrated there in 1910. In 1972, President Nixon made Father's Day an official national holiday.