January 30 is the 30th day of the year. There are 335 days left.

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Today's number is 30

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30 is
30 is the sum of the first four square numbers: 1+4+9+16
30 = 5 x 6; half of the base for the decimal system x half of the base for the duodecimal system = half of the base for the Sexagesimal system (Sumeria, Babylonia). Distributive law at work. There is a lot here but I won't get into it.
30 is zinc
30 is reporter and editor code for end of story
30 is the minimum age to be a US Sentor

30 seconds over Tokyo was a book about the World War II "Doolittle Raid" written by Major Ted William Lawson which was also made into a movie

M30 is a globular cluster in the constellation Capricorn

There were 30 uprights in Stonhenge's Sarsen Circle

There are 30 variations in Bach's Goldgerg Variations

.30 caliber was both a machine gun and a carabine used by the US military

.30-30 and .30-06 were historically significant weapons (a carabine & a rifle)

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Title 30 of the US Code is MINERAL LANDS AND MINING

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30 BCE was the Year of the Consulship of Octavian and Crassus
Gaius Julius Caesar Octavian, aka Augustus, became Roman Consul for the fourth time, captured Alexandria and annexed Ancient Egypt to the Roman Republic.
Cleopatra comitted suicide and Ptolemy XV Caesarion was executed, which ended the Ptolemaic dynasty, the last dynasty of Ancient Egypt.

Mark Antony, Cleopatra VII, Ptolemy Caesar, Marcus Antonius Antyllus, and Hyrcanus II, king of Judea all died.
Eventual king of the Marcomanni, Maroboduus, was born.

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30 CE was the Year of the Consulship of Vinicius and Longinus
Phaedrus translated Aesop's fables
Nerva, an eventual Roman Emperor, and Poppaea Sabina were born

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On this day in:

1648 -- The Treaty of Munster and Osnabruck between Spain & the Netherlands
1703 -- The Forty-seven Ronin, commanded by Oishi Kuranosuke, avenged the death of their lord.
1790 -- The first specialized lifeboat was tested
1820 -- Edward Bransfield sighted & claimed the discovery of Antarctica.
1847 -- Yerba Buena, California iwa renamed San Francisco, California (shoulda stuck with Yerba Buena)
1908 -- Mahatma Gandhi was released from prison by Jan C. Smuts
1930 -- The Politburo of the Soviet Union ordered the extermination of the Kulaks.
1933 -- Adolf Hitler was sworn in as Chancellor of Germany.
1948 -- Mahatma Gandhi was assassinated.
1956 -- Martin Luther King, Jr.'s home was bombed as payback for the Montgomery Bus Boycott.
1960 -- The African National Party was founded in Chad
1968 -- The Tet Offensive was launched
1969 -- The Beatles' last public performance
1972 -- The Bloody Sunday Massacre of marchers by British Paratroopers in Northern Ireland
1982 -- The first computer virus code was written
2003 -- The Kingdom of Belgium officially recognized same-sex marriages

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Born this day in:

58 BC-- Livia, wife of Augustus
1697 -- Johann Joachim Quantz, flute player and composer
1882 -- Franklin D. Roosevelt, you know, the WPA guy who jailed Fred Korematsu
1912 -- Barbara W. Tuchman, historian and author
1915 -- John Profumo, see Christine Keeler
1919 -- Fred Korematsu, internee
1927 -- Ahmed Abdul-Malik, bassist and oud player
1935 -- Richard Brautigan, author, poet, and fisherman
1935 -- Tubby Hayes, saxophonist and compose
1936 -- Horst Jankowski, German pianist and composer (The Jazz Couriers)
1942 -- Marty Balin, singer, songwriter and guitarist
1944 -- Lynn Harrell, cellist and academic
1951 -- Phil Collins, singer, songwriter, producer, and actor
1956 -- Darko Rundek, singer, songwriter and actor
1959 -- Mark Eitzel, singer, songwriter and guitarist
1959 -- Jody Watley, singer, songwriter and producer

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Died this day in:

1836 -- Betsy Ross, seamstress
1838 -- Osceola, Seminole leader
1858 -- Coenraad Jacob Temminck, zoologist and ornithologist
1934 -- Frank Nelson Doubleday, founder of the Doubleday Publishing Company
1948 -- Mahatma Gandhi, lawyer, philosopher, and activist
1948 -- Orville Wright, bicycle maker, engineer, inventor, flyboy
1951 -- Ferdinand Porsche, engineer, founded Porsche, made first electric-gasoline hybrid auto
1958 -- Ernst Heinkel, engineer, founded the Heinkel Aircraft Company
1974 -- Olav Roots, pianist and composer
1980 -- Professor Longhair, singer, songwriter and pianist
1982 -- Lightnin' Hopkins, singer, songwriter and guitarist
1984 -- Luke Kelly, singer and banjo player
2006 -- Coretta Scott King, author and activist
2013 -- Patty Andrews, singer, part of a sister act
2013 -- Ann Rabson, singer, pianist, and guitarist
2014 -- The Mighty Hannibal, singer, songwriter and producer

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Holidays, Holy Days, Festivals, Feast Days and such:
Fred Korematsu Day (California; first observed at UC Berkeley)

Martyrdom of Mahatma Gandhi-related observances:
Martyrs' Day (India)
School Day of Non-violence and Peace (Spain)
Start of the Season for Nonviolence: January 30-April 4 (From the anniversary of the assassination of Mohandas Gandhi's to the anniversary of the assassination of Martin Luther King, Jr.. Particiapnts commit to living a nonviolent life.)

So, for music 
The Beatles
Johann Joachim Quantz
Ahmed Abdul-Malik
Tubby Hayes
Horst Jankowski
Marty Balin
Lynn Harrell
Phil Collins
Darko Rundek
Mark Eitzel
Jody Watley
Olav Roots
Professor Longhair
Lightnin' Hopkins
Luke Kelly
Patty Andrews
Ann Rabson
The Mighty Hannibal


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The Beatles
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Johann Joachim Quantz

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Ahmed Abdul-Malik

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Tubby Hayes

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Horst Jankowski

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Marty Balin

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Lynn Harrell

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Phil Collins

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Darko Rundek

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Mark Eitzel

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Jody Watley

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Olav Roots

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Professor Longhair

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Lightnin' Hopkins

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Luke Kelly

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Patty Andrews

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Ann Rabson

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The Mighty Hannibal

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OK, what's on your minds?

Bonus:

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