| Date | Name | Location / Topic | |
|---|---|---|---|
| World Television Day |  | ||
| Armed Forces Day |  | ||
| Dayton Peace Agreement Day |  | ||
| Dignity and Freedom Day |  | ||
| World Hello Day |  | ||
| Mawlid / Prophet's Birthday |  | ||
| Repentance Day |  | ||
| National Stuffing Day |  | ||
| National Red Mitten Day |  | ||
| Water Festival Ceremony (Day 1) | |||
| Water Festival Ceremony (Day 2) | |||
| Milad un-Nabi/Id-e-Milad | |||
| Eid Milad un-Nabi | |||
| National Gingerbread Cookie Day |  | ||
| False Confession Day |  | ||
Historical Events on November 21
- 1620: Settlers at Plymouth Colony sign the Mayflower Compact.
- 1676: Danish astronauts Ole Rømer quantifies the speed of light.
- 1783: The first hot air balloon that flies without a tether is flown in Paris, France by Jean-François Pilâtre de Rozier and François Laurent d’Arlandes.
- 1789: North Carolina becomes the 12th United States’ State and ratifies the U.S Constitution.
- 1861: Judah Benjamin is appointed as Confederate Secretary of War by Confederate President Jefferson Davis.
- 1877: The invention of the phonograph is announced to the world by Thomas Edison.
- 1905: Albert Einstein publishes the now famous article that leads to his formula E = mc² in the journal Annalen der Physik.
- 1942: The completion of Alcan Highway is celebrated. However, this highway wouldn’t officially be able to be traveled by vehicles until the following year.
- 1945: United Auto Workers demand a thirty-percent raise in wages and strike in ninety-two GM plants in fifty cities.
- 1953: The Piltdown Man – once considered to be the most important hominid skull ever discovered, is determined by the National History Museum in London to be a hoax.
- 2009: Over a hundred people are killed at a mine explosion in Heilongjiang, China.
- 2012: Twenty-eight people are wounded after a bomb is tossed onto a Tel Aviv bus.
- 2015: Due to potential terrorist attacks, the Belgium government puts into place a security lock-down on the city of Brussels which closed shops, public transportation and schools.
Famous Birthdays on November 21
- French philosopher, playwright and historian, Voltaire is born in 1694.
- American soldier and diarist Joseph Plumb Martin is born in 1760.
- American baseball player and manager, Stan Musial is born in 1920.
- American actor Joseph Campanella is born in 1924.
- English author Christopher Tolkien is born in 1924.
- Icelandic singer-songwriter Björk is born in 1965.
- American author Rich Johnston is born in 1972.
- American actress and singer, Rain Phoenix is born in 1972.