Zero Shadow Day: On Tuesday, Bengaluru will see a unique astronomical event. On April 25, also known as Zero Shadow Day, vertical objects in the city won't cast any shadows for a short while. At 12:17 PM, the event will happen. The Indian Institute of Astrophysics (IIA) in Bengaluru's Koramangala will host celebrations on its campus to honor the anniversary. Let’s find out what is Zero Shadow day and how to watch it.

What is Zero Shadow Day?

Zero Shadow Day is a phenomenon that occurs twice a year, where the Sun’s position is directly overhead, casting no shadows on the Earth's surface. It is an interesting occurrence that has fascinated people since ancient times. In this article, we will take a closer look at Zero Shadow Day, its history, significance, and when and where to watch it.

Significance of Zero Shadow Day

The phenomenon of Zero Shadow Day is caused by the tilt of the Earth's axis in relation to its orbit around the Sun. This tilt causes the Sun's position to change throughout the year, causing changes in the length and direction of shadows. The tilt of the Earth's axis also causes the length of daylight to vary across the globe, leading to seasonal changes.

Zero Shadow Day is significant for several reasons. It helps to determine the exact position of the Sun, which is important for navigation and other applications. It is also an opportunity for scientists and astronomers to study the behavior of sunlight and its effects on the Earth's atmosphere. Furthermore, it is an important cultural event in many parts of the world, where people celebrate the onset of a new season.

When and Where to Watch Zero Shadow Day

Zero Shadow Day occurs twice a year in locations between the Tropic of Cancer and the Tropic of Capricorn, where the Sun passes directly overhead. The dates of Zero Shadow Day vary depending on the location and time zone. In India, Zero Shadow Day occurs on April 25th, in cities such as Mumbai, Delhi, and Chennai and Bangalore.