June 21 Smoothie Day
Last updated: June 21, 2026 Quick Answer: June 21 Smoothie Day, officially recognized as National Smoothie Day, falls on June 21 each year — the first day of summer in the Northern Hemisphere. It is a nationally observed food holiday in the United States that celebrates blended fruit and vegetable drinks. Major smoothie chains including… Read More: June 21 Smoothie Day »