When you are viewing a Chart, the Time format menu allows you to change between Elapsed Time in Seconds, or Seconds (depending on the version) and Hour:Minute:Second format.
This time format controls the way the time is displayed, but does not change between relative and absolute offset computations. The time format is subject to the Main Window general setting for "Absolute Timestamps".
With the main Window menu item Main > Absolute Timestamps checked, the meanings are:
Absolute time in seconds (since an arbitrary point in the past)
Absolute time in Hour:Minute:Second:
With the main windows menu item Main > Absolute Timestamps not checked (in other words, relative timestamps), the meanings are:
Elapsed time in seconds since start of this statmonitor file
Elapsed time in seconds since start of this statmonitor file in Hours:Minutes:Seconds
To switch between relative and absolute timestamps, you must go to the Main Window to toggle Absolute Timestamps, and open a new Chart window.
Last updated: 8/28/18