30th May 1921
Memorial Day is commemorated in the United States. Naval veterans from the American Civil War, the Spanish-American War, and the Great War parade in Detroit.
Refugees fleeing Upper Silesia as Polish forces revolt against German rule.
France, May 30, 1921, Prince Hirohito of Japan visiting France, The prince, disembarking in Le Havre, is saluted, before his departure for Paris, by the French commanding officer of the honour detachment.
Ship Losses:
Ise Maru (Japan) The cargo ship was wrecked at Nossaenpu, Hokkaidō.