Most countries inherited their Father's Day schedule from the American model established by Sonora Smart Dodd in 1910, which President Richard Nixon permanently codified into federal law in 1972. That structure pinned the holiday to late June. When American consumer holidays began migrating across borders in the mid-twentieth century, Brazilian merchants discovered that June was already fully occupied on their domestic commercial calendars.
In Brazil, June belongs entirely to the *Festas Juninas*, massive winter harvest festivals honoring Saint Anthony, Saint John, and Saint Peter, as well as *Dia dos Namorados* on June 12. Retailers had zero interest in crowding a market that was already generating peak mid-year consumer spending. Introducing a major gift-giving occasion alongside the feast of Saint Anthony would have split advertising revenue. The mid-winter calendar required an open commercial window, and August offered an empty canvas.
