code: function parseISO(config) {
          var i, l,
              string = config._i,
              match = isoRegex.exec(string);
  
          if (match) {
              config._pf.iso = true;
              for (i = 0, l = isoDates.length; i < l; i++) {
                  if (isoDates[i][1].exec(string)) {
                      // match[5] should be "T" or undefined
                      config._f = isoDates[i][0] + (match[6] || " ");
                      break;
                  }
              }
              for (i = 0, l = isoTimes.length; i < l; i++) {
                  if (isoTimes[i][1].exec(string)) {
                      config._f += isoTimes[i][0];
                      break;
                  }
              }
              if (string.match(parseTokenTimezone)) {
                  config._f += "Z";
              }
              makeDateFromStringAndFormat(config);
          } else {
              config._isValid = false;
          }
      }
docs: date from iso format