How to Pass in more value for UTC() function?

months are zero-based hours are represented as 0 through 23.

        var aDate = new Date(Date.UTC(2021, 5, 4, 12, 21, 55)); 

        document.writeln(aDate);

        //Fri Jun 04 2021 05:21:55 GMT-0700 (Pacific Daylight Time)