*** 1921

**** Summer

**** July

**** September

**** 17 September

**** November-December

**** End

*** 1922

**** January

**** Spring

**** 22 May

**** 1 November

**** December

**** End

*** 1923

**** February 26-April 12

**** Spring

**** July

**** 9 July

**** 19 July

**** August

**** End

*** 1924

**** October

*** 1925

**** February

**** 8 February

*** 1926

**** End of summer

**** 1926/1927

*** 1927

**** Summer

**** 2 October

*** 1928

**** Start of 30s

*** 1930

*** 1931

*** 1933

*** 1934

**** July

*** 1935

**** November

*** 1935–1938

*** 1936

*** 1937

**** January

*** 1938

*** 1941

*** 1941–1945

*** 1947

*** 1950

*** 1952

*** 1953

*** Sources