Previous to their implementation of the Western solar calendar scheme, the Chinese almost exclusively followed their own lunar calendar for determining the times of planting and harvesting and festival days. Although people in China today use the Western calendar for almost all business, governmental and practical matters of daily life, the old system still serves as the basis for working out numerous recurring holidays. This coexistence of two calendar schemes has long been acknowledged by the people of China.
For many people astronomy is an interesting science stuffed with loads of astronomy fun facts. Everything from the size and temperature of our own star, the Sun, to the makeup of distant planets has been established. All of this information can be retold to entertain and enlighten people.