The sumerian culture was the first astronomers to map the stars into different constellations, even before the ancient Greeks. They were able to observe up to 5 planets with the naked eye. Saturn, Jupiter, Mars, Venus, and Mercury.

the 24 solar terms: any of 24 points in traditional East Asian lunisolar calendars that matches a particular astronomical event or signifies some natural phenomenon

Although the Gregorian calendar is in common and legal use in most countries, tr…throughout the Old World to determine religious festivals and national holidays.