It is important that your account is configured for your local timezone so that the optimization isn't affected and the task ETAs are displayed correctly.

Timezone can be changed in the Configuration ⇒ Organization profile tab.

When clicking on Edit you will be able to select the desired timezone from the drop-down menu.

Click Save in the top right corner once you have completed your changes.

The app shows only the time relative to now, so for example in case of Daylight Saving Time, the system will automatically switch to the appropriate time and set the clock forward.