International Cabernet Day is celebrated on September 3, occurring every Thursday before U.S. Labor Day. This day honors Cabernet, the world's most popular red wine grape, and encourages wine enthusiasts to explore its rich heritage, particularly Cabernet Franc and its famous offspring, Cabernet Sauvignon. Celebrations often include raising a glass, discovering new vintages, and sharing favorite Cabernet moments. Wine retailers and restaurants typically offer special promotions, including discounts on Cabernet bottles and tasting events. Notable wineries like Robert Mondavi and Kendall-Jackson may also host online promotions or virtual tastings. Participants are encouraged to share their experiences on social media using the hashtag #InternationalCabernetDay.