The temperature on July 30, 1927 was between 12.8 °C and 25.6 °C and averaged 19.7 °C. There was 9.7 hours of sunshine (62%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
April 14 » The first Volvo car premieres in Gothenburg, Sweden.
May 4 » The Academy of Motion Picture Arts and Sciences is incorporated.
May 18 » After being founded for 20 years, the Government of the Republic of China approves Tongji University to be among the first national universities of the Republic of China.
July 10 » Kevin O'Higgins TD, Vice-President of the Executive Council of the Irish Free State is assassinated by the IRA.
September 30 » Babe Ruth becomes the first baseball player to hit 60 home runs in a season.
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