text: function add12hours(dateString) {
  
    // Get the parts of the date string
    var parts = dateString.split(/\s+/),
        date  = parts[1],
        month = parts[0],
        year  = parts[2],
        time  = parts[3];
  
    var hr    = Number(time.split(':')[0]),
        min   = Number(time.split(':')[1].replace(/\D/g,'')),
        ampm  = time && time.match(/[a-z]+$/i)[0],
        zone  = parts[4].toUpperCase();
  
    var months = ['January','February','March','April','May','June',
                  'July','August','September','October','November','December'];
    var zones  = {'EST': 300, 'AEST': -600}; // Minutes to add to zone time to get UTC
  
    // Convert month name to number, zero indexed. Return if invalid month
    month = months.indexOf(month);
    if (month === -1) { return; }
  
    // Add 12 hours as specified. Add another 12 if pm for 24hr time
    hr += (ampm.toLowerCase() === 'pm') ? 24 : 12
  
    // Create a date object in local zone
    var localTime = new Date(year, month, date);
    localTime.setHours(hr, min, 0, 0);
  
    // Adjust localTime minutes for the time zones so it is now a local date
    // representing the same moment as the source date plus 12 hours
    localTime.setMinutes(localTime.getMinutes() + zones[zone] - localTime.getTimezoneOffset() );
    return localTime;
  }
  
  var inputDateString = 'March 7 2009 7:30pm EST';
  
  console.log(
    'Input: ' + inputDateString + '\n' +
    '+12hrs in local time: ' + add12hours(inputDateString)
   );
  