Two cases of Omicron were detected in Karnataka, India on December 2, 2021. One of the two patients is a 66-year-old male, who is fully vaccinated and had returned from South Africa via Dubai. The second infected person is a 46-year-old male, according to Bruhat Bengaluru Mahanagara Palike (BBMP).

The Bhopal gas tragedy had taken place on the night of 2–3 December 1984 when there was a gas leak at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh. The disaster is considered as one of the world's worst industrial disasters, as over 500,000 people were exposed to methyl isocyanate (MIC) gas.

A solar eclipse occurs when the Moon comes between the Sun and the Earth and partially or fully blocks the Sun's light in some areas and casts a shadow on the Earth. A total solar eclipse occurs when the Sun, Moon, and Earth are in a direct line.

The birth anniversary of India's first President, Dr. Rajendra Prasad is observed on December 3rd. The former President was born on December 3, 1884. He was in office from 1950 to 1962. Prime Minister Narendra Modi paid tribute to the first President and Bharat Ratna Rajendra Prasad on his birth anniversary.

The last Solar Eclipse of 2021 will occur on December 4, 2021. The Solar Eclipse will not be visible from India but people can watch it through NASA live stream. The total solar eclipse will be visible only from Antarctica while some other parts in the southern region will be able to witness a partial Solar Eclipse.

Finance Nirmala Sitharaman is ranked at the top on Fortune India 50 Most Powerful Women list while Reliance's Nita Ambani has grabbed second place. WHO Chief Scientist Soumya Swaminathan is ranked third followed by Kiran Mazumdar-Shaw at the fourth place, Biocon Limited's founder.

The International Day of Persons with Disabilities 2021 is observed every year globally on December 3. The day is dedicated to the people who have been living with disabilities of any form and aims to bring attention to the day-to-day challenges that they face.

The Chief Economist of the International Monetary Fund (IMF), Gita Gopinath will take up a new role as the First Deputy Managing Director of IMF. Gopinath will be the second-rank official at IMF. She will replace the First Deputy Managing Director Geoffrey Okamoto who plans on leaving the IMF early in 2022.