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Zero Shadow Day: Residents of Bengaluru got a chance to experience a rare astronomical gift today. Today is zero shadow day. According to the name given to this day, shadows of people and objects will not be visible for some time today.
This unique astronomical phenomenon that occurred today, April 24, between 12:17 pm and 12:23 pm, will be felt by people living in places located at the same latitude as Bengaluru.
Bengaluru, located at 13.0 degrees north latitude, experiences this phenomenon twice a year. This usually occurs around 24/25 April and 18 August. It is usually celebrated around the equinox in March and September each year. Apart from Bengaluru, people can also watch the event in places like Kanyakumari, Bhopal, Hyderabad and Mumbai.
Zero Shadow Day in other cities of India
Kanyakumari: 10 April and 01 September (local noon: 12:21, 12:22)
Bengaluru: April 24 and August 18 (local noon: 12:17, 12:25)
Hyderabad: 09 May and 05 August (local noon: 12:12, 12:19)
Bhopal: June 13 and June 28 (local noon: 12:20, 12:23)
Zero shadow day is an astronomical phenomenon where the Sun is directly overhead at noon, resulting from the Earth's axial tilt of approximately 23.5 degrees and its orbit around the Sun. This phenomenon is most pronounced near the equator, where the Sun passes directly overhead during the equinox. It occurs twice a year in the areas located between the Tropic of Cancer and the Tropic of Capricorn.
Zero Shadow Day is observed biennially in the areas between the Tropic of Cancer and the Tropic of Capricorn. According to the Astronomical Society of India (ASI), this usually occurs when the Sun reaches its zenith, with dates varying depending on specific locations and latitudes.
The event has cultural and educational significance, often celebrated as a unique astronomical phenomenon. It serves as an opportunity to educate people about the Earth's axial tilt, its orbit around the Sun, and the changing angles of sunlight throughout the year.
