Hi everyone!

In the strategy I'm developing now the orders should be sent in the defined time interval between 21 and 23 +0000 UTC.

As I understand, the bars on charts are shown in +0000 UTC, but the as the result of function call

tick.getTime()

I get time in my current timezone (UTC +3). So to get hour is UTC, I use the following code:

   Calendar cal = Calendar.getInstance();
   TimeZone current_tz = cal.getTimeZone();
   Date date = cal.getTime();
   long UTCOffset=current_tz.getOffset(date.getTime());//get local computer timezone shift
   
   Time = curTick.getTime()-UTCOffset;//tick time in +0000 UTC
    
   calendar.setTimeInMillis(Time);
   
   EA_GMTTime = calendar.get(Calendar.HOUR_OF_DAY); //get current hour in +0000 UTC

Can you please check, if this code is correct, and will it work correct on strategy backtesting?

Also I would like to know, in what time zone (local or UTC )order opening and closing time are shown in the html report, that appears after the backtesting is done?

This is not the case, JForex-API works with UTC+0. You can check that it is the case by simply printing to the console tick.toString() or DateUtils.format(tick.getTime).
See the following examples on how to work with the Timezones and calendar:
https://www.dukascopy.com/wiki/#Customize_trading_hours
If you still don't manage to resolve this, please post full example strategy of yours which would demonstrate the problem. Also please provide the screenshot of the Historical Tester settings that you use.

Thnaks, looks like I missed in my code a line:

calendar.setTimeZone(TimeZone.getTimeZone("GMT"));

Also thanks for a link, it is exactly that I need.