Bengaluru is all set to witness Zero Shadow Day today across the city

On Tuesday, April 25, Bengaluru, India’s technological hub, is poised to witness a unique celestial event known as “Zero Shadow Day,” according to the Astronomical Society of India (ASI). During this event, any vertical objects in the city will not cast any shadows, due to the sun’s position directly overhead. The phenomenon is expected to occur at around 12:17 PM and will last for a brief period. The Indian Institute of Astrophysics (IIA) in Koramangala, Bengaluru, has made arrangements to observe the event, while citizens across the city are also geared up to witness it.

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What is Zero Shadow Day:

Zero Shadow Day is a rare and unique phenomenon that occurs at different times in different locations on Earth. During this brief period, the sun is precisely overhead at noon without any tilt. Normally, the sun’s position is slightly tilted to the north or south and not directly overhead. The Astronomical Society of India (ASI) explains that on Zero Shadow Day, “the Sun’s declination will be equal to the latitude twice – once during Uttarayan and once during Dakshinayan. On these two days, the Sun will be exactly overhead at noon and will not cast a shadow of an object on the ground.”

Zero Shadow Day occurs twice a year in locations between the Tropic of Cancer and the Tropic of Capricorn, such as Bengaluru. In Bengaluru, it will take place on April 25th and August 18th.

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