Keep your tryst with another Natural Phenomenon Across Karnataka From April 24

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In the coming days, as the Sun makes its way across the sky, moving towards the north with each passing day, depending upon where one lives, the Sun will pass through the Zenith. This is Zero Shadow Day. Zenith is the point exactly above one’s head wherever one stands. Given the earth is a sphere-globe, this point varies from place to place with respect to the sky.

At any other point, with the Sun-facing an individual at an angle, his/her shadow will be cast on the ground around the person. As the sun reaches higher in the sky, the length of the shadow reduces and on this day, when the sun is exactly above one’s head, it casts a shadow exactly below. Since one stands on this shadow, one does not really see their shadow making the shadow invisible… or Zero shadow.

Zero Shadow Day Places For Karnataka


With the Earth titled at an angle of 23.5 degrees (as the globes are made), as the earth moves around the Sun, the sun appears to move from north to south, appearing at the Zenith on two days of the year for all people living between the Tropic of Cancer and Tropic of Capricorn. The two days occur in April-May and August every year. With August coinciding with the monsoon and April, a summer month, the chances of observing Zero Shadow Day is higher during this time.

This is one of the easiest astronomical phenomena that can be observed without the use of any instrument.

Zero Shadow Day Demo At Udupi In 2020


People in Mangaluru aka Namma Kudla will observe Zero Shadows at 12:28pm on April 24 and in Udupi on April 25 at 12.29pm. People in Bengaluru will have their Zero Shadow moment on the April 24 at 12.18pm.

ZERO SHADOW DAYS IN KARNATAKA

Date

Place

Date

Place

April 22

Mysuru, Madikeri

May 1

Hubballi, Hospet, Ballari

April 23

Mandya, Puttur

May 2

Dharwad, Gadag, Koppal

April 24

Mangaluru, Hassan, Bengaluru

May 3

Belagavi, Sindhanur

April 25

Udupi, Chikamagaluru, Tumkur, Chikkaballapura

May 4

Gokak, Bagalkot, Raichur

April 26

Kundapura, Thirthahalli, Gauribidanur

May 6

Yadgir

April 27

Bhatkal, Shivamogga, Channagiri

May 7

Vijayapura

April 28

Honnavara, Kumta, Shikaripura, Chitradurga

May 9

Kalaburgi

April 29

Gokarna, Sirsi, Ranebennur, Davanagere

May 10

Hunmabad

April 30

Karwar, Haveri

May 11

Bidar

Source: PAAC, Udupi (Twitter @paacppc)

The shadows for the above place will disappear for a minute between 12.15pm for eastern and 12.35pm for western parts of the state.

Simple Contraption To View Zero Shadow Day


In order to observe Zero Shadow, an object needs to have an equal or increasing width from top to bottom, like a cylinder, cube or a cone. Poles, Traffic Cones or an Inverted Glass Tumbler. Humans have a broader upper body than our lower half and hence would cast a very small amount of shadow which will be minimum on Zero Shadow Day. 

Poornaprajna Amateur Astronomers’ Club urges people to observe and enjoy this beautiful astronomical phenomenon. PAAC plans on streaming the ZSD moment live on the YouTube channel from Mangaluru. The Udupi ZSD will be cast live on the club’s Facebook page. 

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