Calendar cal = Calendar.getInstance();

cal.setTimeInMillis(System.currentTimeMillis());
cal.clear();

cal.set(Calendar.YEAR, 2017);
cal.set(Calendar.MONTH, 11);
cal.set(Calendar.DAY_OF_MONTH, 13);
cal.set(Calendar.HOUR_OF_DAY, 11);
cal.set(Calendar.MINUTE, 30);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
cal.set(Calendar.AM_PM, Calendar.AM_PM);

AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
alarmMgr.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pendingIntent);