code: function dateGenerator(ts, opts) {
  		if (opts.timezone == "browser") {
  			return new Date(ts);
  		} else if (!opts.timezone || opts.timezone == "utc") {
  			return makeUtcWrapper(new Date(ts));
  		} else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
  			var d = new timezoneJS.Date();
  			// timezone-js is fickle, so be sure to set the time zone before
  			// setting the time.
  			d.setTimezone(opts.timezone);
  			d.setTime(ts);
  			return d;
  		} else {
  			return makeUtcWrapper(new Date(ts));
  		}
  	}
docs: select time zone strategy.  This returns a date-like object tied to the desired timezone