What's on in Portugal?
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May 1, 2021
An event every year that begins at 12:00 am on day 1 of May, happening 10 times
The first May Day celebrations focused on workers took place on May 1st 1890 after its proclamation by the first international congress of socialist parties in Europe on July 14th 1889 in Paris, France, to dedicate May 1st every year as the “Workers Day of International Unity and Solidarity.”
The date was chosen due to events on the other side of the Atlantic. In 1884 the American Federation of Organized Trades and Labor Unions demanded an eight-hour workday, to come in effect as of May 1st 1886. This resulted in the general strike and the Haymarket (in Chicago) Riot of 1886, but eventually also in the official sanction of the eight-hour workday.