Except for the national holiday (German Unity Day), public holidays in Germany (gesetzliche Feiertage) are determined by the federal states. Good Friday and Holy Saturday are silence holidays by law. Either Carnival Monday ("Rose Monday") or Mardi Gras is a de facto holiday in some towns and cities in Catholic western and southern Germany which have a strong Carnival tradition. The Three Kings Day, better known as Epiphany, is 6 January, the day after the 12 days of Christmas.