Raphael - School of Athens

“When we were little," the Mock Turtle went on at last, more calmly, though still sobbing a little now and then, "we went to school in the sea. The master was an old Turtle - we used to call him Tortoise -"
"Why did you call him Tortoise, if he wasn't one?" Alice asked.
"We called him Tortoise because he taught us," said the Mock Turtle angrily: "really you are very dull!”

Lewis Carroll

On this day in history:

1143 – King Alfonso VII of León and Castile recognised Portugal as a Kingdom. (but see 1910)
1607 – The Pope's assassins tried to kill Venetian statesman and scientist Paolo Sarpi.
1665 – The University of Kiel was founded.
1789 – The Women's March on Versailles effectively terminated royal authority.
1857 – The city of Anaheim was founded even though neither Disney nor Gene Autry was born yet.
1877 – The Nez Perce War  ended. The wrong side won.
1910 – The Portuguese monarchy was overthrown and a republic was declared.
1911 – The Kowloon–Canton Railway began service.
1944 – The Provisional Government of the French Republic enfranchised women.
1947 – President Truman made the first televised Oval Office address.
1966 – A reactor at the Enrico Fermi Nuclear Generating Station  had a partial meltdown.
1970 – The Public Broadcasting Service (PBS) was founded.
1986 – Mordechai Vanunu revealed Israel's secret nuclear weapons.
1988 – A Chilean opposition coalition defeated Pinochet in his re-election attempt.
2000 – Mass demonstrations in Serbia forced the resignation of Slobodan Miloševic.

Born this day in:

1713 – Denis Diderot, philosopher and critic
1715 – Victor de Riqueti, marquis de Mirabeau, Physiocratic economist and educator
1728 – Chevalier d'Éon, diplomat, soldier, and spy , Go Read About ...
1781 – Bernard Bolzano,  mathematician and philosopher
1795 – Alexander Keith,  brewer and politician
1817 – Catherine Cooper Hopley, author and naturalist
1824 – Henry Chadwick, historian and author(
1858 – Helen Churchill Candee, journalist and author
1879 – Francis Peyton Rous, pathologist and virologist
1882 – Robert H. Goddard, physicist, engineer, and academic
1887 – René Cassin, judge and academic,
1892 – Remington Kellogg, zoologist and paleontologist
1899 – Elda Anderson, physicist and health researcher
1900 – Bing Xin, author and poet, known for her contributions to children's literature
1902 – Ray Kroc, invented  modern US culture
1903 – M. King Hubbert, geophysicist and academic
1907 – Mrs. Miller, novelty singer
1911 – Pierre Dansereau, ecologist and academic
1923 – Philip Berrigan, priest, activist, and hero
1923 – Stig Dagerman,  journalist and author
1928 – Louise Fitzhugh, author and illustrator
1932 – Michael John Rogers, ornithologist
1933 – Billy Lee Riley, rockabilly musician, singer, songwriter, and record producer
1936 – Václav Havel, poet, playwright, and politician,
1937 – Carlo Mastrangelo,  doo-wop singer
1938 – Johnny Duncan, country singer
1941 – Roy Book Binder, singer, songwriter, and guitarist
1942 – Billy Scott, singer and songwriter
1942 – Richard Street, singer, songwriter
1943 – Steve Miller, singer, songwriter, and guitarist
1945 – Brian Connolly, singer, songwriter, and guitarist
1945 – Geoff Leigh, saxophonist and flute player
1947 – Brian Johnson, singer and songwriter
1948 – Carter Cornelius, singer
1948 – Russell Mael, vocalist
1948 – Tawl Ross, guitarist
1949 – B. W. Stevenson, singer, songwriter, and guitarist
1949 – Yashiki Takajin, singer and television host
1950 – "Fast" Eddie Clarke, rock guitarist
1951 – Bob Geldof, singer, songwriter, and actor
1952 – Harold Faltermeyer, keyboard player, composer, and producer
1955 – Jean-Jacques Lafon, singer and songwriter
1957 – Lee Thompson, singer, songwriter, and saxophonist
1958 – Neil deGrasse Tyson, astrophysicist, cosmologist, and author
1959 – Maya Lin, architect and sculptor
1959 – Kelly Joe Phelps, singer, songwriter, and guitarist
1961 – Pato Banton, singer and songwriter
1961 – David Bryson, singer, guitarist, and songwriter
1961 – Sharon Cheslow, singer, songwriter, and guitarist
1964 – Dave Dederer, guitarist and singer
1966 – Sean M. Carroll, physicist, cosmologist, and academic
1970 – Audie Pitre, singer and bass player
1970 – Tord Gustavsen, pianist and composer
1978 – James Valentine, guitarist
1978 – Steinar Nickelsen, organist and composer
1980 – Paul Thomas, bass player

Died this day in:

The remembrance of the past is the teacher of the future.

1714 – Kaibara Ekken, botanist and philosopher (b. 1630)
1740 – Jean-Philippe Baratier, astronomer and scholar (b. 1721)
1777 – Johann Andreas Segner, mathematician, physicist, and physician (b. 1704)
1802 – Sanité Bélair, freedom fighter (b. 1781)[12]
1813 – Tecumseh, tribal leader (b. 1768)
1880 – Jacques Offenbach, cellist and composer (b. 1819)
1940 – Silvestre Revueltas, violinist, composer, and conductor (b. 1889)
1942 – Dorothea Klumpke, astronomer (b. 1861)
1943 – Leon Roppolo, clarinet player and composer (b. 1902)
1985 – Karl Menger, mathematician from the Vienna Circle (b. 1902)
1986 – James H. Wilkinson, mathematician and computer scientist (b. 1919)
1992 – Eddie Kendricks, singer and songwriter
1996 – Seymour Cray, American engineer and businessman, founded CRAY Inc (b. 1925)
2009 – Mike Alexander, English singer-songwriter and bass player (b. 1977)
2010 – Steve Lee, singer and songwriter
2011 – Bert Jansch, singer, songwriter, and guitarist
2011 – Fred Shuttlesworth, activist, co-founded the SCLC
2013 – Ruth R. Benerito, chemist and academic
2015 – Grace Lee Boggs, philosopher, author, and activist

Holidays, Holy Days, Festivals, Feast Days, Days of Recognition, and such:
World Space Week, so go space out 
International Day of No Prostitution (presumably excludes politicians, press, PR and Advertising persons, etc.)
World Teachers' Day
Apple Betty Day
Do Something Nice Day
National Story Telling Day (Isn't every day, with our media, govt., press, and "historians" all telling us tall tales?)
World Architecture Day

Music goes here, iirc, well, With apologies