There is no single "true" calendar. Different cultures and civilizations have developed their own calendar systems throughout history, each with its own unique features and purposes.
Here are some of the most widely used calendars:
- Gregorian Calendar: The most commonly used calendar globally, it is based on the solar year and is used in most countries for civil purposes.
- Julian Calendar: Used by the Roman Empire and later by the Eastern Orthodox Church, it is slightly different from the Gregorian calendar in how it calculates leap years.
- Islamic Calendar: A lunar calendar based on the cycles of the moon, it is used by Muslims worldwide for religious purposes.
- Hebrew Calendar: A lunisolar calendar used by Jewish people, it combines aspects of both lunar and solar cycles.
- Chinese Calendar: A lunisolar calendar used in China and other East Asian countries, it is based on a 12-year cycle of animal signs.
Each calendar system has its own strengths and weaknesses, and the "correctness" of a calendar depends on its intended use and the cultural context.
