How to get time format using country ISO code in android?

I am working on simple application to show the time in different formate. To show the time I am displaying ISO country code using this ISO code. Can I able to change time in that ISO country format?

I have written code as follows

TelephonyManager tMgr = 
    (TelephonyManager)getApplicationContext().getSystemService(
        Context.TELEPHONY_SERVICE);

String iso = tMgr.getNetworkCountryIso();
Log.v("Device iso", "=======>" + iso);
String mbNo = tMgr.getLine1Number();
Log.v("mbNo", "=======>" + mbNo);

Here I am getting iso as US. Can I show the current system time format in US time format?

I have used Date class to show time as follows

DateFormat df = DateFormat.getTimeInstance();
systime = df.format(new Date());

It is displaying time in HH:MM:SS AM/PM format. I would like to display the above time as US format.

How can I display the time in US or any other format?