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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, May 7: Karnataka has revised its standard operating procedure (SOP) for international passengers. The first group of passengers will arrive in the state on May 8.

The number of categories has been reduced to two from three. Category A includes passengers symptomatic on arrival while Category B passengers are those asymptomatic on arrival. These are passengers who are either healthy or those having co-morbidities.

As per the revised SOP, the passenger will be released on the seventh day, if tested negative, to strict home quarantine for another seven days with stamping.

This norm is in contradiction to the Ministry of Home Affairs’ SOP for international passengers. As per the MHA’s SOP, the passengers (asymptomatic) will be under institutional quarantine for 14 days. Testing negative after 14 days, they will be allowed to go home and will undertake self-monitoring of their health for 14 more days.

On the contradiction, Pandey said, "We don't take chances as we rely on tests instead of just quarantining. Other states may be depending on just 14-day institutional quarantine."

"GOI SOP doesn't talk about Covid tests on international passengers. We have put an additional safety layer of three Covid tests on returnees -- one on arrival, second from 5-7 days and last on 12th day. This will ensure definite identification of positive cases even if they are asymptomatic and their subsequent treatment. We should look at the spirit behind the order," he added.

On the 14-day additional reporting period for category B, he said, "It is implied as category B patients should report to us for 14 days after their first 14-day quarantine period is over."

Medical Education Minister Dr K Sudhakar said that the State would follow the Centre’s norms.

Till Tuesday, Karnataka’s SOP had three categories. Under Category A (symptomatic), 14-day institutional quarantine at COVID-19 Health Care Centre was mandatory followed by 14-day reporting period. Under Category B (asymptomatic above 60 years with co-morbidities), seven-day institutional quarantine at hotel/hostel followed by seven-day home quarantine and 14-day reporting period had been recommended. The 14-day home quarantine and 14-day reporting period was mandatory for Category C (asymptomatic).

Bengaluru, Apr 15: Bengaluru Commissioner of Police, Bhaskar Rao, said that prohibitory order under Section 144 of the Criminal Procedure Code (CrPC), 1973, will remain in place for all parts of the City Commissionerate till April 20.

Section 144 of CrPC prohibits the assembly of four or more people in an area.

"Prohibitory order under section 144 of CrPC will remain in force, in all parts of the Bengaluru City Commissionerate for a period up to 12 am of April 20 with effect from 12 am of April 14," according to Rao.

Karnataka, so far, has 258 confirmed COVID-19 cases, with 9 deaths being reported due to the infection, according to the Union Ministry of Health and Family Welfare on Tuesday.