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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, June 12: The Karnataka government has withdrawn its notification that allowed factories to extend working hours up to 10 hours a day and 60 hours a week, with immediate effect.

The extension of work hours was from eight hours a day and 48 hours a week. On May 22, the government had exempted all the factories registered under the Factories Act, from the provisions of Section 51 (weekly hours) and Section 54 (daily hours), till August 21 subject to certain conditions.

"Whereas, having examined the provisions further, the Government of Karnataka now intends to withdraw the said notification," the state government in a fresh notification dated June 11 said.

It said, "Therefore, in exercise of the powers conferred under Section 5 of Factories Act, 1948 (Act No. 63 of 1948), the Government of Karnataka hereby withdraws the Notification dated 22-05-2020 with immediate effect."

According to the Karnataka Employers' Association, a petition was filed in the High Cour challenging the May 22 notification as "illegal, arbitrary and in violation" of Section 5 of the Factories Act which permits exemption from any of the provisions of the Factories Act only in case of Public Emergencies'.

During the course of hearing on June 11 an observation was made by the High Court, that it may have to quash the notification unless the government clarifies as to what is the 'Public Emergency' involved to enhance the working hours by exempting some provisions of the Factories Act, it said.

The court further observed that the government should make a submission on June 12 in this behalf. However, the government withdrew the notification on June 11 itself. Recently states like Rajasthan and Uttar Pradesh too had retracted after permitting extending work hours.