How to read the lunar and solar calendar on a calendar

Writing numbers on a calendar is the solar calendar, such as September 12th. Those written in Chinese characters are the lunar calendar, such as the third day of the seventh month. The lunar calendar is the traditional Chinese calendar. The Lunar Calendar is based on the cycle of the moon phases, with each lunar solstice change being one month, and divides a solar return year into 24 segments to form the twenty-four solar terms. By referring to the solar return year, intercalary months are set to make its average calendar year compatible with the return year. The Lunar Calendar combines the lunar and solar calendars to form a combined lunar and solar calendar. The Lunar Calendar is also known as the Summer Calendar, the Lunar Calendar, the Old Calendar, the Chinese Calendar, and the Chinese Calendar. Because of the use of Xia Zheng, the old days more known as the summer calendar, after 1970, the summer calendar was renamed the lunar calendar.