The 30t o Januar is the 30t day o the year in the Gregorian Calendar, wi 335 days ti come (336 in lowp years).
- 1649 - Execution o Charles I, Keeng o Scots.
- 1826 - The Menai Suspension Brig, connectin mainland Wales an the Isle o Anglesey, opens.
- 1933 - Adolf Hitler comes tae pouer in Germany, wi Franz von Papen as Vice Chancellor.
- 1945 - The ship Wilhelm Gustloff, mainly wi German refugees on baird, is sunk bi a Soviet torpedo in the Baltic Sea, killin 9,500 fowk.
- 1948 - Assassination o Mahatma Gandhi bi Nathuram Godse, a Hindu extremist.
- 1948 - The Winter Olympic Gemmes in St. Moritz, Swisserland, stairt.
- 1964 - The Ranger 6 probe launches tae the Muin.
- 1965 - The funeral o Winston Churchill taks place in Lunnon.
- 1972 - Bloody Sunday: Breetish paratroopers open fire on unarmed civilians in Derry, Northren Ireland, killin 14.
- 1972 - Pakistan withdraws frae the Commonweel o Nations.
- 2000 - Air Kenyae Flicht 431 crashes intae the Atlantic Ocean off Ivory Coast, killin 169 fowk.
- 2003 - Belgium recognises same-sex marriages.
- 2005 - Iraq holds elections.
- 2020 - COVID-19 pandemic: The Warld Heal Organization declares the ootbrak o the novel coronavirus a matter o "internaitional concern".
- 133 - Didius Julianus, Roman Emperor (d. 193)
- 1736 - James Watt, Scots ingineer (d. 1819)
- 1851 - Henry Ogg Forbes, Scots splorer, ornithologist an botanist (d. 1932)
- 1882 - Franklin Delano Roosevelt, 32nd Preses o the Unitit States (d. 1945)
- 1890 - Andy Cunningham, Scots fitbawer (d. 1973)
- 1894 - Boris III o Bulgarie (d. 1943)
- 1899 - Max Theiler, Sooth African-American virologist (d. 1972)
- 1915 - John Profumo, Inglis politeecian (d. 2006)
- 1925 - Douglas Engelbart, American inventor (d. 2013)
- 1927 - Olof Palme, Prime meenister o Swaden (d. 1986)
- 1929 - Isamu Akasaki, Japanese pheesicist
- 1930 - Gene Hackman, American actor
- 1937 - Vanessa Redgrave, Inglis actress
- 1937 - Boris Spassky, Roushie chess player
- 1938 - Islam Karimov, Preses o Uzbekistan (d. 2016)
- 1941 − Dick Cheney, 46t Vice Preses o the Unitit States
- 1951 - Phil Collins, Inglis sangster
- 1962 - Abdullah II o Jordan
- 1968 - Felipe VI o Spain
- 1970 - Fiona Dolman, Scots actress
- 1974 - Christian Bale, Inglis actor
- 1974 - Olivia Colman, Inglis actress
- 1981 - Dimitar Berbatov, Bulgarian fitbawer
- 1981 - Peter Crouch, Inglis fitbawer
- 1987 - Arda Turan, Turkish fitbawer
- 1989 - Kaaze, Swadish muisicker, DJ an record producer
- 2000 - Benee, New Zealand sangster
- 1649 - Charles I, Keeng o Scots (b. 1600)
- 1730 - Peter II o Roushie (b. 1715)
- 1805 - John Robison, Scots pheesicist (b. 1739)
- 1853 - David Boyle, Laird Boyle, Scots juidge (b. 1772)
- 1897 - George Hay-Drummond, 12t Yerl o Kinnoull, Scots peer an cricketer (b. 1827)
- 1908 - James Bell Pettigrew, Scots naituralist an aviation pioneer (b. 1834)
- 1948 - Mahatma Gandhi, Indian activist (b. 1869)
- 1948 - Orville Wright, American aviation pioneer (b. 1871)
- 1951 - Ferdinand Porsche, Austrick-German automotive ingineer (b. 1875)
- 1961 - John Duncan Fergusson, Scots airtist an sculptor (b. 1874)
- 1969 - Dominique Pire, Belgian friar (b. 1910)
- 1982 - Stanley Holloway, Inglis actor (b. 1892)
- 1991 - John Bardeen, American pheesicist (b. 1908)
- 2006 - Coretta Scott King, American activist (b. 1927)
- 2011 - John Barry, Inglis componer (b. 1933)
- 2015 - Zhelyu Zhelev, Preses o Bulgarie (b. 1935)
- 2015 - Carl Djerassi, Austrick-American chemist (b. 1923)
- 2021 - Sophie (Sophie Xeon), Scots muisicker, DJ an sangster (b. 1986)
- Mairtyrs' Day (Indie)
- Schuil Day o Non-violence an Peace (Spain)
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