April 1930

Wednesday 02:

Haile Selassie is proclaimed emperor of Ethiopia.

Saturday 05:

In an act of civil disobedience, Mohandas Gandhi breaks British law after marching to the sea and making salt.

Sunday 06:

Will Rogers starts broadcasting The Will Rogers Program on radio.

Monday 21:

A fire at a Columbus, Ohio, USA, penitentiary kills 320 people.

Tuesday 22:

The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.

Monday 28:

The first night game in organized baseball history takes place in Independence, Kansas.