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 https://isotropic.org/date/
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 view-source:https://isotropic.org/date/
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 (Pere)
 
Javascript proporciona aquesta funcionalitat en la classe Intl.DateTimeFormat

 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat
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 >>> https://jsfiddle.net/2fga0st8/
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