
Long before mechanical clocks, civilisations used the sun’s shadow to measure time. Sundials, simple yet ingenious were among humanity’s earliest timekeeping devices. Across continents, these historic structures stand as reminders of ancient scientific brilliance and architectural artistry. (unsplash)

Forbidden City Sundial: Located within the Forbidden City complex, this Ming Dynasty sundial symbolized imperial authority and precise timekeeping in ancient China. It was both a scientific instrument and a royal emblem. (wikimedia commons)

Augustus Sundial: Commissioned by Emperor Augustus around 10 BCE, this ancient Roman sundial used an Egyptian obelisk as its gnomon. It symbolised Rome’s power and its growing mastery of astronomy and engineering. (wikimedia commons)

Jantar Mantar: Constructed in 1724 by Maharaja Jai Singh II, the Jantar Mantar in Delhi houses several astronomical instruments, including large sundials used to calculate local time with impressive precision. It reflects India’s advanced scientific knowledge in the 18th century. (wikikmedia commons)

Royal Observatory Greenwich Sundial: Situated at the Prime Meridian, this historic sundial reflects Britain’s central role in global time standardization and maritime navigation during the age of exploration. (wikimedia commons)

Samrat Yantra: Located at Jantar Mantar in Jaipur, the Samrat Yantra is the world’s largest stone sundial. Built in the 18th century, it can measure time with remarkable accuracy, up to a few seconds, using the shadow cast by its massive triangular gnomon. (wikimedia commons)

Tower of the Winds: Built in the 1st century BCE, this octagonal marble structure in Athens functioned as a timekeeping monument. It featured sundials on its exterior walls and also housed a water clock inside. (wikimedia commons)