There is nine historical incident which is called black day story.
1. First nuclear attack Hiroshima & Nagasaki August 6, 1945
On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people; tens of thousands more would later die of radiation exposure. Three days later, a second B-29 dropped another A-bomb on Nagasaki, killing an estimated 40,000 people. Japan’s Emperor Hirohito announced his country’s unconditional surrender in World War II in a radio address on August 15, citing the devastating power of “a new and most cruel bomb.”
2. Terrorists attack in September 11, 2001 at World Trade Center
On September 11, 2001, 19 militants associated with the Islamic extremist group al-Qaeda hijacked four airliners and carried out suicide attacks against targets in the United States. Two of the planes were flown into the towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania. Often referred to as 9/11, the attacks resulted in extensive death and destruction, triggering major U.S. initiatives to combat terrorism and defining the presidency of George W. Bush. Over 3,000 people were killed during the attacks in New York City and Washington, D.C., including more than 400 police officers and firefighters.
3. Babri Mosque structure fell in Ayodhya , 6th December 1992
Sixth December 1992 is a horrific day in the history of India. On this very day an old Muslim religious structure Babri mosque was demolished by Hindu fanatics due to the blind faith that the structure happens to be the birth place of Lord Ram. This structure was located in Uttar Pradesh state in India.
4. Bhopal Gas Tragedy, December 3, 1984
The Bhopal Gas Tragedy, 1984 was a catastrophe that had no parallel in the world’s industrial history. In the early morning hours of December 3, 1984, a rolling wind carried a poisonous gray cloud from the Union Carbide Plant in Bhopal, Madhya Pradesh (India). Forty tons of toxic gas (Methy-Iso-Cyanate, MIC) was accidentally released from Union Carbide’s Bhopal plant, which leaked and spread throughout the city. The result was a nightmare that still has no end, residents awoke to clouds of suffocating gas and began running desperately through the dark streets, victims arrived at hospitals; breathless and blind. The lungs, brain, eyes, muscles as well as gastro-intestinal, neurological, reproductive and immune systems of those who survived were severely affected. When the sun rose the next morning, the magnitude of devastation was clear. Dead bodies of humans and animals blocked the street, leaves turned black and a smell of burning chili peppers lingered in the air. An estimated 10,000 or more people died. About 500,000 more people suffered agonizing injuries with disastrous effects of the massive poisoning. None can say if future generations will not be affected.
5. Gujrat Riot,2002
There was a three day period of inter communal violence in the western Indian state of Gujarat. Following the initial incident there were further outbreaks of violence in Ahmedabad for three weeks; statewide, there were further outbreaks of mass killings against the minority Muslim population for three months. The burning of a train in Godhra on 27 February 2002, which caused the deaths of 58 Hindu pilgrims karsevaks returning from Ayodhya, is believed to have triggered the violence. Some commentators, however, hold the view that the attacks had been planned, were well orchestrated, and that the attack on the train was a “staged trigger” for what was actually premeditated violence.
6. Black Day for Kashmir,27 October 1947
When India and Pakistan became independent on August 1947, it was generally assumed that Kashmir, as a contiguous state with a predominantly Muslim population, would accede to Pakistan. Its ruler, the Maharaja, however, on 27 October 1947 acceded to India through an improper and illegal Instrument of Accession although he has lost support of people who have established an independent state (Azad Jammu & Kashmir). On the same day, India airlifted its forces to Srinagar and occupied the valley.
7. Terrorists attack in 1972 at Munich Olympics
During the 1972 Summer Olympics at Munich, in the early morning of September 5, a group of Palestinian terrorists storms the Olympic Village apartment of the Israeli athletes, killing two and taking nine others hostage. The terrorists were part of a group known as Black September, in return for the release of the hostages, theydemanded that Israel release over 230 Arab prisoners being held in Israeli jails and two German terrorists. In an ensuing shootout at the Munich airport, the nine Israeli hostages were killed along with five terrorists and one West German policeman. Olympic competition was suspended for 24 hours to hold memorial services for the slain athletes.
8. Peshawar school attacked,16 December 2014
On 16 December 2014, seven gunmen affiliated with the Tehrik-i-Taliban (TTP) conducted a terrorist attack on the Army Public School in the northwestern Pakistani city of Peshawar. The militants, all of whom were foreign nationals, included one Chechen, three Arabs and two Afghans. They entered the school and opened fire on school staff and children, killing 145 people, including 132 schoolchildren, ranging between eight and eighteen years of age. A rescue operation was launched by the Pakistan Army’s Special Services Group (SSG) special forces, who killed all seven terrorists and rescued 960 people.Chief military spokesman Major General Asim Bajwa said in a press conference that at least 130 people had been injured in the attack.This was the deadliest terrorist attack ever to occur in Pakistan, surpassing the 2007 Karachi bombing.
9. Wall Street Crash of October 29, 1929
The Wall Street Crash was the U.S. Stock Market crash of October 29, 1929, which precipitated a world-wide collapse of share values and triggered the Great Depression – 10 years of economic slump with catastrophic levels of unemployment across all the industrialised countries apart from the Soviet Union.
After the end of the First World War, the world economy was boosted by a period of reconstruction. In the early- to mid-1920s, a series of defeats were inflicted on the workers movement which had been engaged in revolutionary struggles in the wake of the War and the Russian Revolution. These events created conditions for an economic boom which became known as the “Roaring Twenties”. The value of shares on the US stock market rapidly climbed, reaching a peak at the end of August 1929. Prices began to decline in September and early October, while speculation continued, but came to an abrupt end on October 18, when the Stock Market began to fall precipitately. The first day of real panic, October 24, is known as “Black Thursday” – a record 12,894,650 shares were traded. Major banks and investment companies bought up stocks in an attempt to hold up prices and stem the panic, but the panic began again on “Black Monday”, and on “Black Tuesday”, October 29, 16,000,000 shares were sold, and prices on the stock market collapsed completely.