title: Material UI DatePicker Showing Wrong Date
body: <p>The displayed date in Material UI Pickers is 1 day behind the selected date: </p>
  
  <p>I selected 25th, the value in formik is 25th but the value displayed on the form is 24th.</p>
  
  <pre><code>  "@date-io/date-fns": "^1.3.13",
    "date-fns": "^2.9.0",
  </code></pre>
  
  <pre><code>import DateFnsUtils from '@date-io/date-fns';
  import { MuiPickersUtilsProvider, DatePicker } from '@material-ui/pickers';
  import { format, addDays } from 'date-fns';
  
  &lt;MuiPickersUtilsProvider utils={DateFnsUtils}&gt;
      &lt;FastField
         as={DatePicker}
         variant="inline"
         disableToolbar
         name="startTime"
         format="PPP"
         onChange={date =&gt; {
           console.log(format(date, 'yyyy-MM-dd'));
           setFieldValue('startTime', format(date, 'yyyy-MM-dd'));
         }}
         value={values.startTime}
     /&gt;
  &lt;/MuiPickersUtilsProvider&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/rOSbx.png" rel="noreferrer"><img src="https://i.stack.imgur.com/rOSbx.png" alt="enter image description here"></a></p>