Tomorrow marks Lunar New Year's Eve, a day commonly referred to as "Year's Thirtieth." However, for the Year of the Horse, the eve falls on the 29th day of the twelfth lunar month, with the first day of the new year immediately following. Why is there no "Year's Thirtieth" this year? Why does the Lunar New Year begin on the first day of the first lunar month? How is the date of the Lunar New Year determined each year? What are the differences between the lunar and Gregorian calendars? Let’s explore these questions together!