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Is there a good AS3 data library?

I'm curious if anyone can tell me a reliable and well-documented Date library for AS3. In particular, I would like it to work (at least in principle), like formatting a Java date, so that you can pass a string of a certain type and return a date object, which can then be easily translated to an alternative time zone, etc. . Working with a native Date object is an incredible PITA when you need to do such things ... I hope I don't have to reinvent this wheel from scratch.

TIA

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package  {
    public class DrDredelDate {     

        /*
        init new date by passing:
        a) nothing - an object with the current time will be generated
        b) a millisecond string for a specific time
        c) a time formatted in one of the following two ways:
            2013-01-01 00:00:00 -7:00   -- timzeone is optional, if omitted, date will be created as GMT
            or
            2012-01-18T23:30:42-08:00  -- timezone non-optional         
        */
        public function DrDredelDate(inD:String = null) {
            if(inD == null ){
                d = new Date(); 
                getDateVars(d)
            }
            else if(inD.replace(/\d+/,"") == ""){
                d = new Date(parseInt(inD))
                getDateVars(d);
            }
            else 
                d = convertFromString(inD);     
        }



        /**
        Format using the following control characters:
        m = month, 
        d = day, 
        yy = 2 digit year, 
        yyyy = 4 digit year, 
        h = 24 hour time, 
        M = minute, 
        s = second, 
        t = timezone as digits offset, 
        c = month abbr, 
        W = weekday 
        H = 12hour 
        a = am/pm 
        A = AM/PM
        T = timezone abbr //if available
        */      
        public function getFormattedDate(formatString:String):String{
            var ret:String = "";
            for(var i=0;i<formatString.length; i++){
                if(formatString.charAt(i) == 'm'){
                    if(formatString.substring(i).match(/^mm/)){
                        ret += addLeadingZero(month);i++;continue;                      
                    }ret += month;continue;
                }
                if(formatString.charAt(i) == 'd'){
                    if(formatString.substring(i).match(/^dd/)){
                        ret += addLeadingZero(date);i++;continue;                       
                    }ret += date;continue;
                }

                if(formatString.charAt(i) == 'y'){
                    if(formatString.substring(i).match(/^yyyy/)){
                        ret += year;i+=3;continue;                      
                    }else if(formatString.substring(i).match(/^yy/)){
                        ret += (year+"").substring(2,4);i++;continue;
                    }
                }
                if(formatString.charAt(i) == 'h'){
                    if(formatString.substring(i).match(/^hh/)){
                        ret += addLeadingZero(hours);i++;continue;                      
                    }ret += hours;continue;
                }
                if(formatString.charAt(i) == 'H'){
                    if(formatString.substring(i).match(/^HH/)){
                        ret += addLeadingZero(militaryToClockHour());i++;continue;                      
                    }ret += militaryToClockHour();continue;
                }
                if(formatString.charAt(i) == 'a'){
                    ret += ampm();continue;
                }
                if(formatString.charAt(i) == 'A'){
                    ret += AMPM();continue;
                }
                if(formatString.charAt(i) == 'M'){
                    if(formatString.substring(i).match(/^MM/)){
                        ret += addLeadingZero(minutes);i++;continue;                        
                    }ret += minutes;continue;
                }
                if(formatString.charAt(i) == 's'){
                    if(formatString.substring(i).match(/^ss/)){
                        ret += addLeadingZero(seconds);i++;continue;                        
                    }ret += seconds;continue;
                }
                if(formatString.charAt(i) == 't'){
                    ret += timezoneOffset;continue;
                }
                if(formatString.charAt(i) == 'T'){
                    ret += timezoneString;continue;
                }
                if(formatString.charAt(i) == 'c'){
                    ret += getMonthAbbr();continue;
                }
                if(formatString.charAt(i) == 'W'){
                    ret += getWeekday();continue;
                }               
                ret += formatString.charAt(i);
            }
            return ret;
        }   

        /**
        Usage:
            Returns a formatted string representation of this Date object converted over into the requested timezone. Note that this has no effect on the underlying date object and the returned value is simply a string representation. 
        arguments :
        format: pass in the same format as you would for the method above for the format param
        timeZoneOffset: pass in an abbr or one of the US tZones from mySQL or just a numeric offset representing the hour offset from GMT ie. -5 or +3      
        */
        public function getShiftedTimezoneFormattedDate(format:String, timeZoneOffset:String = "GMT"):String{
            var tzOffset = null;

            if( timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "GMT")
                tzOffset = 0;
            if( timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "EST" || timeZoneOffset == "US/Eastern")
                tzOffset = -5;
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "EDT")
                tzOffset = -4;
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "CST" || timeZoneOffset == "US/Central")
                tzOffset = -6;
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "CDT")
                tzOffset = -5;  
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "MST" || timeZoneOffset == "US/Mountain")
                tzOffset = -7;
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "MDT")
                tzOffset = -6;  
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "PST" || timeZoneOffset == "US/Pacific")
                tzOffset = -8;
            if(timeZoneOffset.toUpperCase().replace(/[^A-Z]/g,"") == "PDT")
                tzOffset = -7;          

            if(tzOffset == null){
                var operator = timeZoneOffset.charAt(0);
                tzOffset = parseInt(timeZoneOffset.replace("/:.*/",""));                
            }
            if(isNaN(tzOffset))
                return null

            tzOffset = tzOffset * 60 * 60 * 1000;
            var dTzOffset = -d.timezoneOffset * 60 * 1000;              
            var newMS = d.getTime() - dTzOffset + tzOffset;         
            var nDate:Date = new Date(newMS);           
            return new DrDredelDate(nDate.getTime() + "").getFormattedDate(format);
        }

        public function isAfterDate(comparisonDate:Date):Boolean{
            return(d.time > comparisonDate.time)
        }
        public function isSameAsDate(comparisonDate:Date):Boolean{
            return(d.time == comparisonDate.time)
        }

        public function getTime(){
            return d.time;
        }
        public function getDate(){
            return d;
        }



///////////NOTHING TO REALLY LOOK AT BELOW HERE////////////////
        public static var PST:String = "PST";
        public static var EST:String = "EST";
        public static var CST:String = "CST";
        public static var MST:String = "MST";   
        private var d:Date;
        public var year,month,monthName,date,weekDay,hours,minutes,seconds,timezoneOffset;

        private function getDateVars(d:Date){
            this.year = d.fullYear;
            this.month = d.month;
            this.date = d.date;
            this.hours = d.hours;
            this.minutes = d.minutes;
            this.seconds = d.seconds;
            this.timezoneOffset = d.timezoneOffset;
        }

        private function convertFromString(inD:String):Date{
            //2012-10-03 10:15:00 GMT-0800
            if(inD.match(/\d{4}\-\d{1,2}\-\d{1,2} \d{1,2}\:\d{1,2}\:\d{1,2}/)){
                return timeFromMySqlTimestamp(inD);
            }
            //2012-01-18T23:30:00-08:00
            if(inD.match(/\d{4}\-\d{1,2}\-\d{1,2}T\d{1,2}\:\d{1,2}\:\d{1,2}/)){
                return timeFromGenericTimestamp(inD);
            }
            return null;
        }

        private var monthAbbr = ['','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];

        public function getWeekday(){
            return d.toString().split(" ")[0];
        }
        public function getMonthAbbr(){
            return d.toString().split(" ")[1];
        }

        private function timeFromMySqlTimestamp(inD:String):Date{
            //2012-10-19 03:15:22 PST
            var parts:Array = inD.split(" ");// 0 = date, 1 = hours, 2 = timezone           
            year = stripLeadingZero(parts[0].split("-")[0]);
            month = stripLeadingZero(parts[0].split("-")[1]);
            date = stripLeadingZero(parts[0].split("-")[2]);
            hours = stripLeadingZero(parts[1].split(":")[0]);
            minutes = stripLeadingZero(parts[1].split(":")[1]);
            seconds = stripLeadingZero(parts[1].split(":")[2]);
            try{
                timezoneOffset = getTZFromString(parts[2]);
            }catch(e:Error){
                timezoneOffset = "GMT-000";
            }

            return new Date(monthAbbr[month] + " " + date + " " + year + " " + hours + ":" + minutes + ":" + seconds + " " + timezoneOffset);//09 03 2012 23:39:05 GMT-0500
        }

        private var timezoneString = "";
        private function getTZFromString(inStr:String){
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "EST"){timezoneString = "EST";   return "GMT-0500"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "EDT"){timezoneString = "EDT";   return "GMT-0400"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "CST"){timezoneString = "CST";   return "GMT-0600"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "CDT"){timezoneString = "CDT";   return "GMT-0500"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "MST"){timezoneString = "MST";   return "GMT-0700"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "MDT"){timezoneString = "MDT";   return "GMT-0600"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "PST"){timezoneString = "PST";   return "GMT-0800"};
            if(inStr.toUpperCase().replace(/[^A-Z]/g) == "PDT"){timezoneString = "PDT";   return "GMT-0700"};
            if(inStr.charAt(0) == "-" || inStr.charAt(0) == "+") return "GMT" + inStr;
            return inStr;
        }

        private function timeFromGenericTimestamp(inD:String):Date{
            //2012-01-18T23:30:00-08:00
            var parts:Array = inD.split("T");// 0 = date, 1 = hours, 2 = timezone           
            year = stripLeadingZero(parts[0].split("-")[0]);
            month = stripLeadingZero(parts[0].split("-")[1]);
            date = stripLeadingZero(parts[0].split("-")[2]);
            hours = stripLeadingZero(parts[1].split(":")[0]);
            minutes = stripLeadingZero(parts[1].split(":")[1]);
            var secAndTZ = parts[1].split(":")[2];
            var plusMinusTok = (secAndTZ.indexOf("-") != -1)? "-" : "+";
            seconds = stripLeadingZero(secAndTZ.split(plusMinusTok)[0]);
            timezoneOffset = plusMinusTok + secAndTZ.split(plusMinusTok)[1] + "00";

            return new Date(monthAbbr[month] + " " + date + " " + year + " " + hours + ":" + minutes + ":" + seconds + " " + timezoneOffset);//09 03 2012 23:39:05 GMT-0500
        }

        private function addLeadingZero(inD:Number):String{
            return ( inD >= 10) ? inD + "" : "0" + inD;
        }
        private function stripLeadingZero(inStr:String){            
            if(inStr.replace(/\d+/,"") != ""){
                trace("DrDredelDate: stripLeadingZero: inStr " + inStr + " is non numeric. returning null");
                return null;
            }
            inStr = inStr.replace(/^0+/,"");
            if(inStr == "") 
                return 0;
            return parseInt(inStr);             
        }


        private function militaryToClockHour(){
            if(hours == 0 || hours == 12)
                return 12;
            if(hours < 12)return hours;
            return hours - 12;
        }
        private function AMPM(){
            return (hours < 12)?"AM":"PM";
        }
        private function ampm(){
            return (hours < 12)?"am":"pm";
        }

    }   
}
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