Jo Marchant, Nature In 1900, Greek divers rifling through an ancient shipwreck recovered dozens of bronze fragments that turned out to be parts of a 2,000-year-old mechanical calendar. Now ...

Carvings on a 12,000-year-old monument in Turkey appear to mark solar days and years, making it possibly the oldest solar calendar in ancient civilization. Marking a massive comet strike as the ...

Adorned with characters, they focus on the Tiangan Dizhi, an intricate astronomical calendar system from the Shang dynasty. Associate researcher Huang Wei noted the exceptional state of the ...