utc-to-local-time.user.js

// ==UserScript==
// @name           UTC to local time converter
// @namespace      utc-to-local-time-converter
// @description    Make times on chromium-status.appspot.com easier to read.
// @match          http://chromium-status.appspot.com/*
// @match          https://chromium-status.appspot.com/*
// @version        0.1
// ==/UserScript==

(function(document) {
  var y = ', ' + new Date().getFullYear();
  var j = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
  var m = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
  [].forEach.call(document.querySelectorAll('table[border] td:nth-of-type(2)'), function (el, i) {
    if (i == 0) {
      el.width = 160;
    } else {
      var d, p = el.textContent.split(',');
      p.splice(1, 0, y);
      d = new Date(p.join(''));
      el.textContent = j[d.getDay()] + ' ' + m[d.getMonth()] + ' ' +
                       (d.getDate() < 10 ? '0' : '') + d.getDate() + ', ' +
                        (d.getHours() > 12 ? (d.getHours() - 12 == 0 ? '12' : d.getHours() - 12) :
                                             (d.getHours() == 0 ? '12' : d.getHours())) +
                       ':' + (d.getMinutes() < 10 ? '0' : '') + d.getMinutes() + ' ' +
                       (d.getHours() > 12 ? 'p' : 'a') + 'm';
    }
  });
}(unsafeWindow.document));