A fascinating celestial event, known as Zero Shadow Day (ZSD), took place on May 9th, captivating visitors at the Birla Planetarium. This extraordinary phenomenon occurs twice a year when the sun is positioned directly overhead, causing vertical objects to cast no shadows. The next occurrence is expected on August 3rd. The Zero Shadow Day phenomenon is attributed to the Earth's axial tilt and its rotation around the sun. Throughout the year, these factors alter the angle at which sunlight strikes the Earth, influencing the length and direction of shadows. Birla Planetarium officials showcased the ZSD event between 12:12 pm and 12:14 pm, drawing a crowd of eager students and parents. Attendees expressed their awe and excitement after witnessing the rare occurrence firsthand. During Zero Shadow Day, the sun's declination matches the latitude of a specific location, leading to sunlight falling vertically relative to objects on the ground. This alignment results in the absence of shadows for a brief period, creating
