Overview
- The two holidays fall on different dates and grew from separate histories in different regions.
- April Fools’ Day on April 1 has unclear roots often tied to 16th‑century calendar changes in France.
- Día de los Santos Inocentes on December 28 stems from the biblical story of children killed under King Herod.
- Customs vary by country, from France’s paper fish and the U.K.’s noon cutoff to U.S. brand hoaxes and Germany’s Aprilscherz.
- News outlets urge readers to verify surprising claims as social platforms amplify pranks, especially in U.S. bilingual communities where both dates are observed.