Second International, which was formed in 1889 and dissolved on the eve of World War I in 1914 consitituted some of the same parties that would later form the Socialist International. Among the Second International's most famous actions were its 1889 declaration of 1 May as International Labour Day and its 1910 declaration of 8 March as International Women's Day. While the Second International was split by the outbreak of World War I, a skeleton form survived through the International Socialist Commission. The International re-formed in 1923 (as the Labour and Socialist International), and was reconstituted again, in its present form, after World War II (during which many social democratic and socialist parties had been suppressed in Nazi-occupied Europe).