public Calendar parseDate(String input) {
		Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
		int date = 0, month = 0, year = 0, hourOfDay = 0, minute = 0, second = 0;
		Pattern p = Pattern.compile("([0-3][0-9])[ -]*(\\w+)[ -]*([0-9]*)[ ]*([0-9][0-9]):([0-9][0-9]):([0-9][0-9])[ ]*([A-Z]*)");
		Matcher m = p.matcher(input);
		if(!m.find())
			return null;
		date = Integer.parseInt(m.group(1));
		String mon = m.group(2).toLowerCase();
		switch(mon)
		{
			case "jan":month=0;
			break;
			case "feb":month=1;
			break;
			case "mar":month=2;
			break;
			case "apr":month=3;
			break;
			case "may":month=4;
			break;
			case "jun":month=5;
			break;
			case "jul":month=6;
			break;
			case "aug":month=7;
			break;
			case "sep":month=8;
			break;
			case "oct":month=9;
			break;
			case "nov":month=10;
			break;
			case "dec":month=11;
			break;
			default:
				return null;
		}
		String y = m.group(3);
		int temp;
		if(y.length()==4)
			year = Integer.parseInt(y);
		else if(y.length()==2)
		{
			temp=Integer.parseInt(m.group(3));
			if(temp>=0 && temp<70)
				year = 2000+temp;
			else if(temp >= 70 && temp <100)
				year = 1900+temp;
		}
		hourOfDay = Integer.parseInt(m.group(4));
		minute = Integer.parseInt(m.group(5));
		second = Integer.parseInt(m.group(6));
		String tz = m.group(7);
		if(!tz.contentEquals("")&&!tz.contentEquals("GMT"))
		{
			return null;
		}
		cal.set(year, month, date, hourOfDay, minute, second);
		return cal;
	}