The 10th of the 3rd month: the legendary founders of Vietnam, honored at their temple on Nghĩa Lĩnh mountain; a public holiday since 2007. The Hùng Kings' Temple Festival (Vietnamese: Giỗ Tổ Hùng Vương or Lễ hội đền Hùng) is a Vietnamese festival held annually from the 1st to the 10th day of the third lunar month in honor of the Hùng King (Hùng Vương in Vietnamese). The main festival day, which is a public holiday in Vietnam since 2007, is on the 10th day. Although the official name is the Death Anniversary of the Hùng Kings (Vietnamese: Giỗ Tổ Hùng Vương), the festival does not mark any specific date of death for any Hùng King. Wiki link Dates computed on the Chinese calendar from the Sun and Moon, in each country's own time. Text: Wikipedia (CC BY-SA).