On May 9, 2023, at 12:12 PM, residents of Hyderabad, India, will witness a unique astronomical event known as Zero Shadow Day. During this phenomenon, vertical objects will cast no shadow as the Sun reaches a perfect 90-degree angle directly overhead. This occurrence lasts for approximately two minutes and is a result of the Earth's axial tilt of 23.5 degrees. To celebrate this event, the B M Birla Science Centre will host a public observation from 11:30 AM to 12:30 PM, featuring guided solar observation sessions and interactive science demonstrations. Participants are encouraged to bring simple objects, such as rulers, to observe the effect firsthand. Zero Shadow Day happens twice a year for locations within +23.5 and -23.5 degrees latitude, making it a rare occurrence worth experiencing. Following Hyderabad, cities like Pune and Mumbai will have their own Zero Shadow Days on May 13 and May 15, respectively.