Highcharts DateTime Localization

Can someone point me to how I can localize the date-related Strings which are hardcoded in the HighCharts js-file. For instance, instead of the default ‘Feb’ date label in the x-axis, I would want the chart to display the localized value ‘Fév’. I tried implementing the localization by setting the options on the language object before the chart is instantiated:

Highcharts.setOptions({
lang: {
    months: ['Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin', 'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre'],
    weekdays: ['Dimanche', 'Lundi', 'Mardi', 'Mercredi', 'Jeudi', 'Vendredi', 'Samedi']
} });

but the chart still displays the default values.

jsFiddle with the problem.

Answer

Just to complete a little bit this topic:

All the options related with language are available here

A full Portuguese example:

var highchartsOptions = Highcharts.setOptions({
      lang: {
            loading: 'Aguarde...',
            months: ['Janeiro', 'Fevereiro', 'Março', 'Abril', 'Maio', 'Junho', 'Julho', 'Agosto', 'Setembro', 'Outubro', 'Novembro', 'Dezembro'],
            weekdays: ['Domingo', 'Segunda', 'Terça', 'Quarta', 'Quinta', 'Sexta', 'Sábado'],
            shortMonths: ['Jan', 'Feb', 'Mar', 'Abr', 'Maio', 'Jun', 'Jul', 'Ago', 'Set', 'Out', 'Nov', 'Dez'],
            exportButtonTitle: "Exportar",
            printButtonTitle: "Imprimir",
            rangeSelectorFrom: "De",
            rangeSelectorTo: "Até",
            rangeSelectorZoom: "Periodo",
            downloadPNG: 'Download imagem PNG',
            downloadJPEG: 'Download imagem JPEG',
            downloadPDF: 'Download documento PDF',
            downloadSVG: 'Download imagem SVG'
            // resetZoom: "Reset",
            // resetZoomTitle: "Reset,
            // thousandsSep: ".",
            // decimalPoint: ','
            }
      }
  );