It is obviously useful to have the time on your computer set correctly (because you know what time it is for a start), but some traders become obsessed with making sure that the time on their computer is exactly correct (i.e. not even half a second off), because they believe that having their trading will be more profitable (or profitable at all) as a result.

For example, a trader might use the time on their computer being slightly inaccurate as an excuse for a particular trade not being profitable, because if the time had been set correctly, they would have made the trade a few seconds later, and the stop loss would not have been reached.

The financial markets move based upon the price, so your trading system or trading technique should also be based upon the price, and the accuracy of the time on your computer should not make any difference to the profitability of your trading. If you honestly believe that having the time on your computer set exactly correctly is making a difference to your trading, then you need to realize that it is your trading system or trading technique that is the problem, and not the accuracy of the time on your computer.

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