How to make localization on months / days for D3js?

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I just had the same issue, and I found the way to fix it without recompiling d3.

https://github.com/mbostock/d3/wiki/Localization

The documentation mentions the function d3.locale, this one builds the functions used for formatting numbers and dates. So if you call it with your own localization rules, you’re half way there.

var myFormatters = d3.locale({
  "decimal": ".",
  "thousands": ",",
  "grouping": [3],
  "currency": ["$", ""],
  "dateTime": "%a %b %e %X %Y",
  "date": "%m/%d/%Y",
  "time": "%H:%M:%S",
  "periods": ["AM", "PM"],
  "days": ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
  "shortDays": ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
  "months": ["Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre"],
  "shortMonths": ["Ene", "Feb", "Mar", "Abr", "May", "Jun", "Jul", "Ago", "Sep", "Oct", "Nov", "Dic"]
});

The next step is to actually tell d3 to use this new formatting functions. So for using the new time formatter do this:

d3.time.format = myFormatters.timeFormat;

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