title: Changing the initial letter of the day in datepicker
body: <p>You can change the initial letters of weeks in datepicker? Gave some research and read the documentation but have not found much information. Also researched the code some option and the one that came closest was "dayNamesMin", but still can not make changes. That's the part I want to change:</p>
  
  <p><img src="https://i.stack.imgur.com/RCZvr.png" alt="enter image description here"></p>
  
  <p>And this is the code with the options:</p>
  
  <pre><code>function K() {
          this.debug = false;
          this._curInst = null;
          this._keyEvent = false;
          this._disabledInputs = [];
          this._inDialog = this._datepickerShowing = false;
          this._mainDivId = "ui-datepicker-div";
          this._inlineClass = "ui-datepicker-inline";
          this._appendClass = "ui-datepicker-append";
          this._triggerClass = "ui-datepicker-trigger";
          this._dialogClass = "ui-datepicker-dialog";
          this._disableClass = "ui-datepicker-disabled";
          this._unselectableClass = "ui-datepicker-unselectable";
          this._currentClass = "ui-datepicker-current-day";
          this._dayOverClass =
              "ui-datepicker-days-cell-over";
          this.regional = [];
          this.regional[""] = {
              closeText: "Done",
              prevText: "Prev",
              nextText: "Next",
              currentText: "Today",
              monthNames: ["Janeiro", "Fevereiro", "Março", "Abril", "Maio", "Junho", "Julho", "Agosto", "Setembro", "Outubro", "Novembro", "Dezembro"],
              monthNamesShort: ["Jan", "Fev", "Mar", "Abr", "Mai", "Jun", "Jul", "Ago", "Set", "Out", "Nov", "Dez"],
              dayNames: ["Domingo", "Segunda", "Terça", "Quarta", "Quinta", "Sexta", "Sábado"],
              dayNamesShort: ["Dom", "Seg", "Ter", "Qua", "Qui", "Sex", "Sab"],
              dayNamesMin: ["Do", "Se", "Te", "Qa", "Qi", "Se", "Sa"],
              weekHeader: "FDS",
              dateFormat: "mm/dd/yy",
              firstDay: 0,
              isRTL: false,
              showMonthAfterYear: false,
              yearSuffix: ""
          };
  </code></pre>