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Mangaluru, Apr 23: An astronomical phenomenon, ‘Zero Shadow Day', will be observed in Mangaluru on April 24 and in Udupi on April 25. 

According to a press release from Poornaprajna Amateur Astronomers’ Club, the wonder will commence and people will see their shadows disappear for a few moments at 12:28 pm.

The phenomenon is called as Zero Shadow Day. If a person takes a candle in a dark room and use it to create a shadow of one’s palm on the wall, the hand will cast shadow on the wall as one moves the hand. But when one places the palm on the wall, there will be no shadow.

In the phenomenon, the sun at these times shines exactly above the heads on these days. In astronomy, this point is called as Zenith. The point in the sky directly above an observer at any given location. So it is quite clear now that on Zero Shadow Day, the sun passes through the Zenith as a result of which, all objects will have minimal or no shadow if they are on the ground.

The reason for this happens on some specific days is concerned with astronomy. The earth spins around on its own axis and causes days and nights. It also revolves around the sun causing a year. But the seasons are caused because the axis is tilted at an angle of 23.5 degrees. It is because of this tilt that the sun rises every day in the east gradually moving towards the north till June 21st and then slowly proceeding towards the south till December 21st every year. “We call these days solstice. This means the sun shines between the Tropic of Cancer and Tropic of Capricorn every day passing by the equator on the days we call equinox,” the release stated.

As the earth moves around the sun and revolves on its own axis, for all the people between Tropic of Cancer and Tropic of Capricorn, the Sun at noon moves father and closer to the zenith passing through zenith twice causing two Zero Shadow Days per year. People at Mangaluru will observe this on April 24 and August 18 every year and People in Udupi will observe this on April 25 and August 17 every year.

Places with same latitudes will observe the same days of Zero Shadow but the time would vary with longitude. For example, people of Bengaluru as they share the latitude with Mangaluru will also observe it on April 24. While the people of Mangaluru will observe their shadows disappear at 12.28pm, people of Bengaluru will observe this at 12:17pm. Places like Moodabidri, Bantwal, Sakleshpur and Hassan will also observe Zero Shadow on April 24.

Places like Brahmavar, Karkala, Sringeri, Kudremukha, Chikkamagaluru will observe the Zero Shadow Day on the same day as Udupi on April 25.

Mangaluru, Jun 3: The district administrations of Dakshina Kannada and Kasaragod have issued standard operating procedures (SOP) for the movement of people between two neighbouring districts that fall under two different states.

Even though thousands of people used to commute between these two districts due to employment, education and other reasons every day, the travel has been banned for over two months due to covid lockdown.

Dakshina Kannada DC Sindhu B Rupesh has assured that travel passes will be issued for working professionals/students who have to commute every day.

Those who wish to travel to DK district from Kasargod have to register on https://bit.ly/dkdpermit for daily pass.

The pass applicant should mention the travel destinations, and the complete work address in DK. He/she should also upload Aadhaar card, proof of workplace. On receipt of the applications, the AC of Mangaluru division will issue the pass which will be valid till June 30.

The DC said that the pass details will be recorded at Talapady check post daily. Those who fail to report during the exit from Dakshina Kannada will be subjected to quarantine by the taluk administration and penal action will be initiated as per Epidemic Act, she warned.

Thermal screening of all persons entering DK will be conducted at the checkpost. Only those who are asymptomatic will be allowed to enter.

As per the SOP issued by Kasargod District Collector, those who wish to commute between these two districts have to register in COVID-19 Jagratha portal under the emergency pass category and the applicant has to mention the reason as “inter-state travel on a daily basis."