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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.

Bengaluru, Mar 31: The total number of confirmed cases of coronavirus in Karnataka rose to 98 on Tuesday, according to the state government.

This includes 3 deaths and 6 patients who were cured and discharged, leaving the active cases to 89.

Meanwhile, Karnataka Home Minister Basavaraj S Bommai said that his government has succeeded in tracking more than 24 people in Bengaluru, who attended the Tablighi Jamat event in Delhi held earlier this month.

"Over 24 people, who attended Tablighi Jamaat event in Delhi, tracked in Bengaluru. We have quarantined 54 people. 8 people also in Bidar. 1 person found positive in Bidar and we have quarantined him. There are people who attended jamaat from almost all districts of the state," Bommai told news agency here.

Delhi's Nizamuddin area emerged as a hotspot after a religious meeting was held at Markaz by the Tableeghi Jamaat earlier this month, and several COVID-19 positive cases have been found among those who attended the gathering.

At least 24 people staying at Markaz building in Nizamuddin area of the national capital have tested positive for coronavirus, Delhi Health Minister Satyendar Jain on Tuesday.

"All of them are being screened. We are not certain of the number but it is estimated that 1500-1700 people had assembled at the Markaz building. 1033 people have been evacuated so far - 334 of them have been sent to the hospital and 700 sent to quarantine center. A total of 24 positive cases have been found so far," he said while speaking to reporters here.

The minister also slammed the organizers of the religious event saying that they have committed a grave crime.

New Delhi, April 5: Former Karnataka chief minister HD Kumaraswamy on Sunday challenged Prime Minister Narendra Modi to offer a "credible scientific and rational" explanation for his candle-lighting call and said he is giving "meaningless tasks" to an already exhausted population.

The JD(S) leader questioned if the Prime Minister asked the nation to observe a candle-light vigil on the eve of foundation day of BJP.

"Has the PM slyly asked the nation to observe a candle light vigil on the eve of foundation day of BJP? April 6 being its foundation day, what else can explain the choice of date & time for this event? I challenge the PM to offer a credible scientific and rational explanation," Kumaraswamy tweeted.

"The government is yet to provide PPEs for doctors and make test kits affordable for the common man. Without telling the nation what concrete steps are being taken to combat COVID-19 menace, the prime minister is giving meaningless tasks to an already exhausted population," he tweeted.

"It is shameful to convert the national crisis into an event of self aggrandizement & it is beyond shameful to push the hidden agenda of his party in the face of global calamity. May sense prevail upon the PM," the JDS leader said in another tweet.

Amid a nationwide COVID-19 lockdown, Prime Minister Modi on Friday appealed to countrymen to light diyas and candles on April 5 at 9 pm to fight the darkness spread by the pandemic. He asked the people to turn off all the lights in their homes and stand at doors or balconies and light candles or diyas, torches or mobile flashlights for 9 minutes on April 5.

Last month, PM Modi had asked the people to come out in their balconies and clap and beat utensils to show appreciation for doctors, nurses and others helping fight coronavirus on 'Janata Curfew'.