National Olive Day is observed worldwide every June 1, celebrating the olive fruit and its culinary uses. Launched in 2015 by Divina, a brand of FOODMatch, this day concludes International Mediterranean Diet Month, which is recognized in May. People celebrate by enjoying olives in various forms, such as in Greek salads, pizzas, or as snacks, and may also purchase gourmet olives or olive oil. The day encourages activities like hosting Mediterranean dinner parties, trying new recipes, or visiting local olive oil mills and orchards. The largest producers of olives include Spain, Greece, and Italy, which account for 95% of the world's olive production. Additionally, World Olive Tree Day is celebrated on November 26, highlighting the cultural and economic significance of olive trees.