Recurrence pattern: every year on November 26.

World Olive Tree Day is observed worldwide every November 26. Established by the UNESCO General Conference, this day highlights the cultural, economic, environmental, and social significance of the olive tree, encouraging its protection. The olive tree, native to the Mediterranean Basin, is one of the oldest domesticated crops, with its fruits primarily used to produce olive oil, a staple in Mediterranean cuisine. UNESCO proclaimed this observance in 2019, following a proposal from Lebanon and Tunisia, to celebrate the values of the olive branch and promote olive biodiversity. Celebrations often include events such as conferences, exhibitions, and cultural activities, supported by the International Olive Council and various stakeholders in the olive oil industry. Participants are encouraged to engage in activities like visiting olive orchards, purchasing olive products, and sharing their experiences on social media with the hashtag #WorldOliveTreeDay.