Clock: incorrect ordinals (1st 2nd 3rd)

I think the Javascript is showing the incorrect ordinals. When I refresh the page, I initially see 22nd, but this is quickly overwritten (presumably by the Javascript) to show 22th. I think the solution is in the file clock.js, the following works for me:

Change:

  switch (day) {
    case 1
      var dayOfMonthAppend = Drupal.t('st');
      break;
    case 2:
      var dayOfMonthAppend = Drupal.t('nd');
      break;
    case 3:
      var dayOfMonthAppend = Drupal.t('rd');
      break;
    default:
      var dayOfMonthAppend = Drupal.t('th');
      break;
  }

to:

  switch (day) {
    case 01: case 1: case 21: case 31:
      var dayOfMonthAppend = Drupal.t('st');
      break;
    case 02: case 2: case 22: 
      var dayOfMonthAppend = Drupal.t('nd');
      break;
    case 03: case 3: case 23:
      var dayOfMonthAppend = Drupal.t('rd');
      break;
    default:
      var dayOfMonthAppend = Drupal.t('th');
      break;
  }

Since "day" is not always 1, 2, 3, and 11th, 12th and 13th do not follow the rule.