"Doyo no Ushi no Hi" is a traditional Japanese festival that occurs on the day of the ox in the summer, typically in late July or early August. This day is part of the Doyo season, which is believed to be a time when the heat of summer can be particularly intense. The festival is associated with the Shinto belief in the importance of seasonal changes and the need to maintain health during the hot months. On this day, people often consume unagi, or grilled eel, as it is thought to provide stamina and energy to withstand the summer heat. Eating unagi is a long-standing custom, and many families enjoy this dish together. The festival highlights the connection between food, health, and seasonal traditions in Japanese culture.