One of China’s oldest holidays, the Duanwu Festival occurs on the longest day of the year. It is a time for feasting on zongzi (sticky rice dumplings) and racing dragon boats, which is why this holiday is also known as the Dragon Boat Festival. Another name for Duanwu is the Double Fifth Festival, since it falls on the 5th day of the 5th month of the lunar calendar.  Since that date varies every year on the Western calendar, download the Rémy Martin Lunar Calendar app to ensure you never miss this holiday.