Pune, Maharashtra, India, will witness Zero Shadow Day on May 13 at 12:30 PM, when vertical objects will cast no shadow for a few minutes. This phenomenon occurs only twice a year, with the next occurrence on September 30, often obscured by clouds. The event is significant for astronomy enthusiasts and is celebrated in several southern Indian locations, including Mumbai, Nashik, and Satara. The Jyotirvidya Parisanstha (JVP), the oldest amateur astronomy club in India, will host an event for approximately 200 participants at Tilak Smarak Mandir. The Zero Shadow Day is not only a visual spectacle but also a valuable opportunity for scientific experiments, such as measuring the Earth's radius using trigonometric calculations based on shadow observations from different locations.