On July 28, which happens to be Dr. Baruch Blumberg's (1925–2011) birthday, the world observes World Hepatitis Day (WHD). The hepatitis B virus was identified by Dr. Blumberg in 1967, and the first hepatitis B vaccine was created by him two years later. The culmination of these accomplishments was Dr. Blumberg's 1976 Nobel Prize in Physiology or Medicine. WHD is observed each year to raise awareness of viral hepatitis, which affects more than 354 million people worldwide according to the World Health Organization (WHO) and CDC.

Sandra Annette Bullock is an American actress and producer who was born on July 26, 1964. She has won numerous awards, including an Academy Award and a Golden Globe, and was the highest-paid actress in the world in 2010 and 2014. She was named one of Time magazine's 100 most influential people in the world in 2010.

When the first total solar eclipse photograph was captured on July 28, 1851, that all changed. According to Space.com, the image was taken by Prussian daguerreotypist Johann Julius Friedrich Berkowski during a total solar eclipse in Königsberg, which is now Kaliningrad, Russia.

Huma Qureshi, an Indian actress and model born on July 28, 1986, is most frequently seen in Hindi-language movies. Additionally, she has been nominated for three Filmfare Awards. While working as a theatre actor and model, Qureshi earned a bachelor's degree in history with honours from the University of Delhi. She performed in a number of theatrical productions before relocating to Mumbai and signing a two-year deal to appear in television commercials for Hindustan Unilever.

The 11th President of India, Avul Pakir Jainulabdeen Abdul Kalam, was an Indian aerospace scientist who lived from October 15, 1931, to July 27, 2015. He was in office from 2002 to 2007. He studied aerospace engineering and physics and was born and raised in Rameswaram, Tamil Nadu. He worked as a scientist and science administrator for the following four decades, primarily at the Indian Space Research Organization (ISRO) and the Defence Research and Development Organization (DRDO). He was heavily involved in both India's efforts to develop military missiles and its civilian space programme.

On November 12, 1940, Amjad Khan was born in Hyderabad, Hyderabad State, British India. Known for the films Sholay (1975), Yaarana (1981), and Maa Kasam, he was also a director (1985). Shaila Khan was his wife. On July 27, 1992, he passed away in Bombay, Maharashtra, India. In a nearly 20-year career, he appeared in over 132 movies. He was the Jayant actor's son. He became well-known for playing villains in mostly Hindi movies, most notably as Dilawar and Gabbar Singh in the classic Sholay from 1975. (1978).

Paul Michael Levesque (born July 27, 1969), better known by his ring name Triple H, is an American business executive, actor, and retired professional wrestler. He is the executive vice president of WWE's Global Talent Strategy & Development, as well as the executive producer of the NXT brand, as of 2022. He is widely regarded as one of the greatest professional wrestlers of all time.

Indira Priyadarshini Gandhi, an Indian politician and a key member of the Indian National Congress, lived from 19 November 1917 to 31 October 1984. She was India's third prime minister and the country's first and only female leader to date. In 1982, Prime Minister Indira Gandhi made her first trip to the US in almost 11 years.

Mara Eva Duarte de Perón (born Mara Eva Duarte; 7 May 1919 – 26 July 1952), also known as Eva Perón or Evita, was a politician, activist, and philanthropist from Argentina. She was the wife of Argentine President Juan Domingo Perón (1895–1974) and served as First Lady of Argentina from June 1946 until her death in July 1952.

Kriti Sanon (born July 27, 1990) is an Indian actress who is best known for her work in Hindi films. In 2014, she made her acting debut in a Telugu psychological thriller. Sanon won the Filmfare Award for Best Female Debut for her performance in Heropanti (2014), her first Hindi film.

Maximilien Robespierre, a French lawyer and statesman who lived from 6 May 1758 to 28 July 1794, is regarded as one of the most well-known and significant figures of the French Revolution. He advocated for universal manhood suffrage, the abolition of both clerical celibacy and slavery while serving as a member of the Estates-General, the Constituent Assembly, and the Jacobin Club.

Sir Michael Philip Jagger, an English singer, songwriter, actor, and film producer, was born on July 26, 1943, and rose to international prominence as the lead vocalist and one of the founding members of the Rolling Stones. One of the most successful songwriting collaborations in history is with Keith Richards. Jagger's career spanned six decades, and he has been called "one of the most popular and influential frontmen in rock & roll history."