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Zero Shadow Day In Bangaluru


At 12:17 pm, Bengaluru experienced a ‘Zero Shadow Day’, when vertical objects appear to cast no shadow. This was because the sun was at its zenith, and so the shadow was directly under the object.


GS I: Geography

Dimensions of the Article:

  1. About Zero Shadow Day:
  2. Why does it happen?

About Zero Shadow Day:

  • A phenomenon where the shadow of any vertical object disappears at local noon.
  • Occurs twice a year for every point on Earth between the Tropic of Cancer and the Tropic of Capricorn.
  • Next Zero Shadow Day in Bengaluru is on August 18.

Why does it happen?

  • Happens because of the tilt of Earth’s rotation axis at an angle of roughly 23.5° to the axis of revolution around the Sun.
  • The Sun’s location moves from 23.5°N to 23.5°S of Earth’s equator and back, causing Uttarayan and Dakshinayan.
  • All places whose latitude equals the angle between the Sun’s location and the equator on that day experience Zero Shadow Day.
Other information:
  • Zero Shadow Day occurs on different days in places away from 130 latitude.
  • Zero Shadow Day is restricted to locations between the tropics.
  • The northernmost and southernmost points are the two solstices, and the crossing of the Sun across the equator are the two equinoxes.

-Source: Indian Express

March 2024