JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-datetimepicker/2.5.4/build/jquery.datetimepicker.full.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.6.4/css/bootstrap-datepicker.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.6.4/js/bootstrap-datepicker.min.js"></script>

<div class="form-group">
  <label for="usr">Informe a data que deseja estar na lista vip:</label>
  <input type="text" class="form-control" id="data" name="data" required="true">
</div>

JavaScript

$(function() {
   $('#data').datepicker({ beforeShowDay:
    function(dt)
    {
       return (dt.getDay() == 1 || dt.getDay() == 3 ? false : true);
    }
 });
});