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This is a list of occasions, such as holidays and events, named after or commonly referred to by the calendar day on which they fall.
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This is a list of occasions, such as holidays and events, named after or commonly referred to by the calendar day on which they fall.
| Date | Name | Other names | Observed in | Description |
|---|---|---|---|---|
| March 15 | Ides of March | — | Ancient Rome | Day noted for various religious festivities, and the anniversary of Julius Caesar's assassination. |
| April 1 | April Fool's Day | — | Worldwide | Observance known for hoaxes and pranks. |
| April 20 | 420 | — | Worldwide | An informal observance celebrating the recreational use of cannabis. |
| May 1 | May Day | International Workers' Day | Worldwide | Ancient spring festival and labor celebration commemorating the eight-hour day. |
| May 5 | Cinco de Mayo | — | United States, Puebla, Mexico | Spanish for "fifth of May." Commemorates the Mexican army's victory over French forces at the Battle of Puebla on May 5, 1862. |
| May 9 | 9 May | Victory Day | Russia, Israel, and many other nations | Marks the capitulation of Nazi Germany to the Soviet Union in World War II on 8 May 1945. |
| May 24 | May Two-Four | Victoria Day (French: Fête de la Reine) | Canada | Celebrates the birthday of Queen Victoria and the current reigning Canadian Monarch. Observed on the last Monday preceding May 25th. |
| June 19 | Juneteenth | Emancipation Day | United States | Commemorates the end of slavery in Texas as a result of the Emancipation Proclamation. |
| July 4 | Fourth of July | Independence Day | United States | Commemorates the United States' adoption of the Declaration of Independence on July 4, 1776. |
| ט׳ באב | The Ninth of Av | Tisha B'Av | Israel, and by Jews worldwide | An annual fast day in Judaism which commemorates the anniversary of a number of disasters in Jewish history. |
| (see description) | Double Ninth Festival | Chung Yeung Festival | China, Vietnam, Korea | A traditional Chinese holiday observed on the 9th day of the 9th month in the Chinese calendar. |
| October 10 | Double Ten Day | National Celebration Day | Republic of China (Taiwan) | National day of Taiwan, commemorating the start of the Wuchang Uprising on October 10, 1911. |
| November 5 | Fifth of November | Guy Fawkes Night | England, some Commonwealth nations | Commemorates the arrest of Gunpowder Plot conspirator Guy Fawkes on 5 November 1605. |
| Date | Name | Other names | Description |
|---|---|---|---|
| June 1, 1794 | Glorious First of June | Third Battle of Ushant | A naval battle between the Great Britain and France during the French Revolutionary Wars. |
| March 31, 1909 | 31 March Incident | — | Political crisis within the Ottoman Empire in April 1909, during the Second Constitutional Era. |
| March 1, 1919 | March 1st Movement | — | Korean independence movement. |
| May 4, 1919 | May Fourth Movement | — | Chinese sociopolitical movement originating from protests that occurred on May 4, 1919. |
| May 30, 1925 | May Thirtieth Movement | — | Major labor and anti-imperialist movement during the middle-period of the Republic of China era. |
| April 12, 1927 | Shanghai massacre | April 12 Purge | Violent suppression of Chinese Communist Party organizations and leftist elements in Shanghai by forces supporting General Chiang Kai-shek and conservative factions in the Kuomintang. |
| January 28, 1932 | January 28 incident | — | Conflict between the Republic of China and the Empire of Japan. |
| May 15, 1932 | May 15 incident | — | Attempted coup d'état in the Empire of Japan. |
| December 9, 1935 | December 9th Movement | — | Mass protest led by students in Beiping to demand that the Chinese government actively resist Japanese aggression. |
| February 26, 1936 | February 26 incident | 2/26 | Attempted coup d'état in the Empire of Japan. |
| July 7, 1937 | Marco Polo Bridge Incident | July 7 Incident | Battle during July 1937 in the district of Beijing between China's National Revolutionary Army and the Imperial Japanese Army. |
| December 7, 1941 | Pearl Harbor Day | — | US base at Pearl Harbor attacked by Japan, leading US to enter WWII. |
| July 20, 1944 | 20 July plot | — | Attempted assassination of Adolf Hitler. |
| February 28, 1948 | February 28 incident | — | Anti-government uprising in Taiwan that was violently suppressed by the Kuomintang–led nationalist government of the Republic of China. |
| October 17, 1952 | 17 October affair | — | Event during which Indonesian soldiers pressured the president to disband the Provisional People's Representative Council. |
| September 30, 1965 | 30 September Movement | — | Self-proclaimed organization of Indonesian National Armed Forces members who, in the early hours of 1 October 1965, assassinated six Indonesian Army generals in an abortive coup d'état. |
| May 13, 1969 | 13 May incident | — | Episode of Sino-Malay sectarian violence that took place in Kuala Lumpur, the capital of Malaysia. |
| April 19, 1970 | 19th of April Movement | — | Colombian urban guerrilla movement active in the late 1970s and 1980s, named after 1970 Colombian general election. |
| November 20, 1936 and 1975 | 20-N | — | Deaths of José Antonio Primo de Rivera, Falange Española, and Francisco Franco. |
| June 4, 1989 | 1989 Tiananmen Square protests and massacre | June Fourth Incident | Chinese pro-democracy protests that ended in a violent government crackdown |
| April 19, 1995 | Oklahoma City bombing | — | A car bomb attack in the Alfred P. Murrah Federal Building, and remains the deadliest act of domestic terrorism in U.S. history. |
| September 11, 2001 | September 11th | 9/11 | Four coordinated suicide attacks by plane hijacking upon the United States by Islamist militant group al-Qaeda. |
| March 11, 2004 | 2004 Madrid train bombings | 11M | Series of coordinated, nearly simultaneous bombings against the Cercanías commuter train system of Madrid, Spain. |
| July 7, 2005 | 7 July 2005 London bombings | 7/7 | Series of four coordinated suicide attacks carried out by Islamic terrorists in London that targeted commuters travelling on the city's public transport system. |
| August 29, 2005 | Hurricane Katrina | — | Category 5 hurricane that made landfall along the Gulf Coast, causing a least a thousand deaths and the levee failures in New Orleans. |
| March 23, 2009 | March 23 Movement | M23 | Rebel military group that is for the most part formed of ethnic Tutsi, based in eastern areas of the Democratic Republic of the Congo. |
| March 11, 2011 | 2011 Tōhoku earthquake and tsunami | 3/11 | Earthquake and tsunami in the Tōhoku region of Japan. |
| July 22, 2011 | 2011 Norway attacks | 22. juli | A car bomb attack on Regjeringskvartalet in Oslo, Norway, followed by a shooting massacre on Utøya. |
| January 20, 2017 | DisruptJ20 | — | An organization that protested and attempted to disrupt events of the presidential inauguration of the 45th U.S. President, Donald Trump. |
| January 6, 2021 | January 6 United States Capitol attack | January 6th | Attack on the United States Capitol by supporters of President Trump to prevent the counting of electoral college votes from the recent presidential election. |
| October 7, 2023 | 2023 Hamas-led attack on Israel | — |
The terms anno Domini (AD) and before Christ (BC) are used when designating years in the Julian and Gregorian calendars. The term anno Domini is Medieval Latin and means "in the year of the Lord" but is often presented using "our Lord" instead of "the Lord", taken from the full original phrase "anno Domini nostri Jesu Christi", which translates to "in the year of our Lord Jesus Christ". The form "BC" is specific to English, and equivalent abbreviations are used in other languages: the Latin form, rarely used in English, is Ante Christum natum (ACN) or Ante Christum (AC).
The French Republican calendar, also commonly called the French Revolutionary calendar, was a calendar created and implemented during the French Revolution, and used by the French government for about 12 years from late 1793 to 1805, and for 18 days by the Paris Commune in 1871, and meant to replace the Gregorian calendar.
The Hijri calendar, or Arabic calendar also known in English as the Muslim calendar and Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual fasting and the annual season for the great pilgrimage. In almost all countries where the predominant religion is Islam, the civil calendar is the Gregorian calendar, with Syriac month-names used in the Levant and Mesopotamia but the religious calendar is the Hijri one.
Intercalation or embolism in timekeeping is the insertion of a leap day, week, or month into some calendar years to make the calendar follow the seasons or moon phases. Lunisolar calendars may require intercalations of days or months.
A month is a unit of time, used with calendars, that is approximately as long as a natural orbital period of the Moon; the words month and Moon are cognates. The traditional concept of months arose with the cycle of Moon phases; such lunar months ("lunations") are synodic months and last approximately 29.53 days, making for roughly 12.37 such months in one Earth year. From excavated tally sticks, researchers have deduced that people counted days in relation to the Moon's phases as early as the Paleolithic age. Synodic months, based on the Moon's orbital period with respect to the Earth–Sun line, are still the basis of many calendars today and are used to divide the year.
The New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one. Many cultures celebrate the event in some manner. In the Gregorian calendar, the most widely used calendar system today, New Year occurs on January 1. This was also the first day of the year in the original Julian calendar and the Roman calendar.
The 2nd millennium of the Anno Domini or Common Era was a millennium spanning the years 1001 to 2000. It began on 1 January 1001 (MI) and ended on 31 December 2000 (MM), ., spanning the 11th to 20th centuries.
In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured.
The Grand Slam in tennis is the achievement of winning all four major championships in one discipline in a calendar year. In doubles, a Grand Slam may be achieved as a team or as an individual with different partners. Winning all four major championships consecutively but not within the same calendar year is referred to as a "non-calendar-year Grand Slam", while winning the four majors at any point during the course of a career is known as a "Career Grand Slam".
Events from the year 1730 in Canada.
Events from the year 1731 in Canada.
Events from the year 1732 in Canada.
Old Style (O.S.) and New Style (N.S.) indicate dating systems before and after a calendar change, respectively. Usually, they refer to the change from the Julian calendar to the Gregorian calendar as enacted in various European countries between 1582 and 1923.
Coligny is a commune in the Ain department in eastern France.
The Assyrian calendar is a solar calendar used by modern Assyrian people.
The Berber calendar is the agricultural calendar traditionally used by Berbers. The calendar is utilized to regulate the seasonal agricultural works.
Events from the year 1739 in Canada.
The Gregorian calendar is the calendar used in most parts of the world. It went into effect in October 1582 following the papal bull Inter gravissimas issued by Pope Gregory XIII, which introduced it as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun.
The 2020 UCI World Tour was a series of races that was scheduled to include thirty-six road cycling events throughout the 2020 cycling season. However, some of races were cancelled due to the COVID-19 pandemic. The tour started with the opening stage of the Tour Down Under on 21 January, and concluded with the final stage of the Vuelta a España on 8 November.