Time displayed is different from my system time

Time displayed is different from my system time

I have logged the time taken to post and get a reponse from a server. But
the time seems to be 4 hours ahead of my system clock.
The code I used is :
String posttime =
java.text.DateFormat.getTimeInstance().format(Calendar.getInstance().getTime());
Log.i("Time at which HTTP POST was sent",""+posttime );
The output in the log is :
Time at which HTTP POST was sent(323): 8:24:53 PM instead of 4:24:54PM.
Any input would be appreciated.