To display charts, AgenaTrader generally uses time stamps provided by exchanges. However, when building charts based on historical candles (especially 1 minute bars and smaller) AgenaTrader uses the current and exact moment in time. In order to avoid incomplete charts caused by incorrectly set system clocks, AgenaTrader synchronizes your system clock with your data feed. This means that your PC clock will be in sync with the atomic clock server and guarantees that your system time is always set correctly.
The popup looks like this:
Please confirm the offered time by clicking the Yes button.