Lunar/Solar Calendar Conversion

1. The lunar calendar and the solar calendar are two distinct calendar systems, each with its own historical background, calculation method, and applications.

2. The solar calendar, also known as the Gregorian calendar, is currently the most widely used calendar system internationally. It is based on the Earth’s orbital period around the Sun, meaning that a year is approximately 365.2425 days long.

3. The lunar calendar, also known as the lunar calendar or agricultural calendar, is the traditional calendar used in China and some other Asian countries. It is primarily based on the cycle of the Moon’s orbit around the Earth, meaning that a synodic month is approximately 29.5306 days.