Fieldwork at the historic Harappa site has led to the discovery of a specialized structure interpreted as an Astronomical Gnomon. The find consists of a precisely leveled circular platform made of baked bricks with a central socket for a vertical stone pillar, surrounded by etched radial lines. Archaeologists believe this installation was used by Harappan astronomers to track the movement of the sun and determine the solstices, which were critical for timing the planting of winter and summer crops.
Dr. Ananya Roy, lead archaeologist on the mission, stated that the geometric precision of the platform aligns with the cardinal directions within a fraction of a degree. This site suggests that the Indus Valley Civilization possessed a highly developed understanding of celestial mechanics, integrated directly into their urban planning. Similar stone-aligned markers were found in nearby residential blocks, suggesting that time-keeping was a standardized public utility in the ancient city.