20 July - Alexander the Great birth anniversary

Alexander III of Macedon ( 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great (Aléxandros ho Mégas), was a king (basileus) of the ancient Greek kingdom of Macedon[a] and a member of the Argead dynasty. He was born in Pella in 356 BC and succeeded his father Philip II to the throne at the age of 20. He spent most of his ruling years on an unprecedented military campaign through western Asia and northeast Africa, and by the age of thirty, he had created one of the largest empires of the ancient world, stretching from Greece to northwestern India.He was undefeated in battle and is widely considered one of history's most successful military commanders.

Alexander was born in Pella, the capital of the Kingdom of Macedon,on the sixth day of the ancient Greek month of Hekatombaion, which probably corresponds to 20 July 356 BC, although the exact date is uncertain.He was the son of the king of Macedon, Philip II, and his fourth wife, Olympias, the daughter of Neoptolemus I, king of Epirus.Although Philip had seven or eight wives, Olympias was his principal wife for some time, likely because she gave birth to Alexander.

20 July - Lempira Day

Lempira Day is a Honduran holiday celebrated annually on July 20. It is dedicated to an indigenous leader of the Lenca people who led the resistance against the Spanish conquistadors in the 1530s.

In 1533, Spanish conquistador Francisco de Montejo received a royal decree that gave him permission to conquer certain parts of Honduras. He then attempted to conquer the territory inhabited by the Lencas in western Honduras.

Chief Lempira organized resistance against the Spanish conquerors and gathered an army of about 30,000 people. Unfortunately, the resistance was ultimately unsuccessful. The Spaniards lured Lempira out to talk and then shot him dead. After their leader’s death, the Lenca surrendered.

Despite the defeat of Lempira's uprising and the subsequent conquest of Honduras, the Lenca leader is considered a national hero of Honduras. The currency of Honduras and one of the country’s 18 departments were named after him. Besides, Lempira is portrayed on the 1 lempira note.

Although Lempira Day is not a public holiday, it is widely celebrated throughout in Honduras, especially in schools (most Honduran schools are in session in July). On this day, children dress up as indigenous Hondurans and prepare presentations of different ethnic groups. Lempira Day is more than a holiday dedicated to a national hero, it is a celebration of indigenous culture and heritage.

Source : https://anydayguide.com/

20 July - Viking 1 Lander lands on Mars in 1976

Viking 1 was the first of two spacecraft (along with Viking 2) sent to Mars as part of NASA's Viking program.On July 20, 1976, it became the second spacecraft to soft-land on Mars, and the first to successfully perform its mission. (The first spacecraft to soft-land on Mars was the Soviet Union's Mars 3 on December 2, 1971, which stopped transmitting after 14.5 seconds.) Viking 1 held the record for the longest Mars surface mission of 2307 days (over 6​1⁄4 years)or 2245 Martian solar days,until that record was broken by the Opportunity rover on May 19, 2010.

20 July - Geeta Dutt death anniversary

Geeta Dutt (born Geeta Ghosh Roy Chowdhuri; 23 November 1930 – 20 July 1972) was a prominent Indian playback singer and a famous Hindi and Bengali classical artist, born in Faridpur before the Partition of India. She found particular prominence as a playback singer in Hindi cinema. She also sang many modern Bengali songs, both in the film and non-film genre.

Geeta Dutt died on 20 July 1972 due to cirrhosis of liver at the age of 41 in Mumbai, Maharashtra. She was survived by her three children and siblings.

20 July - Haakon, Crown Prince of Norway born in July 1973

Haakon, Crown Prince of Norway (Haakon Magnus; born 20 July 1973) is the only son of King Harald V and Queen Sonja, and heir apparent to the throne of Norway.

In 2001, Haakon married Mette-Marit Tjessem Høiby with whom he has two children. He has an older sister, Princess Märtha Louise. In accordance with Norway's agnatic primogeniture succession, Haakon became crown prince when his father ascended the throne on 17 January 1991 upon the death of his grandfather Olav V.

The Skaugum Estate, situated in the area of Semsvannet, is the official residence of the Crown Prince and Crown Princess

20 July - Krishna Kanta Handique birth anniversary

Krishna Kanta Handique (20 July 1898 – 7 June 1982) was a Sanskrit scholar, an Indologist and philanthropist from Assam. He was a recipient of the civilian honour of the Padma Shri and Padma Bhushan

The Indian Posts and Telegraphs Dept. issued a commemorative stamp in honor of Prof. Handique on 7 October 1983. The Govt of Assam has instituted the prestigious Krishna Kanta Handique Memorial Award in his honour in the field of promotion of Sanskrit language and literature.

Handique, the Sanskrit scholar is known for his three major works:

Naisadhacarita of Sriharsa, 1934
Yasastilika and Indian Culture 1949
Pravarasena's Setubandha 1976