A zero shadow day is a day on which the Sun does not cast a shadow of an object at noon, when the sun will be exactly at the zenith position.

Zero shadow day happens twice a year for locations between +23.5 and -23.5 degrees of latitude (between the tropics of Cancer and Capricorn, respectively).

The dates will vary for different locations on Earth. This phenomenon occurs when the Sun's declination becomes equal to the latitude of the location.On a zero shadow day, when the sun crosses the local meridian, the sun's rays will fall exactly vertical relative to an object on the ground and one cannot observe any shadow of that object.

We observed ZSD in Bangalore on 24th April with these simple experiment, its a video composition of 2000+ images blended to make a timelapse

Gears:
__Nikon D750
__50MM 1.8 Prime lens
__2000+ images
__ZSD at 1.05 in timelapse video

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