code: function makeDateFromString(config) {
          var i,
              string = config._i,
              match = isoRegex.exec(string);
  
          if (match) {
              // match[2] should be "T" or undefined
              config._f = 'YYYY-MM-DD' + (match[2] || " ");
              for (i = 0; i < 4; i++) {
                  if (isoTimes[i][1].exec(string)) {
                      config._f += isoTimes[i][0];
                      break;
                  }
              }
              if (parseTokenTimezone.exec(string)) {
                  config._f += " Z";
              }
              makeDateFromStringAndFormat(config);
          } else {
              config._d = new Date(string);
          }
      }
docs: date from iso format