Broker server time is relative to GMT (Greenwich Mean Time)
The amount of deviation is the GMT offset.
If the broker server time is 14:00 and Greenwich Mean Time is 12:00,
The former is two hours ahead of the latter,
GMT offset is +2.
In addition, when acquiring the time by the program,
You can get the local time of your PC with the function TimeLocal ().
But if you do a backtest,
Because it gets the server time instead of the local time,
You need to separate the logic between production and test.