High counts on Days in Cycle

I am investigating data returned on a Cycle Time report. I have some Epics that are showing very high counts for ‘Average days in cycle’. When I look at the history of the issue it shows a significantly shorter time from the point the issue transitioned to an In Progress status (Implementing) to a Done status (LIVE). Is there a date that I can check that gets set when the clock starts and ends? Am I evaluating the correct dates?

Hi Seth44
Thank you for reaching out!

In order to help with your questions, we need more information.
Please either:
a) include your report definition (it will not contain sensitive data, only the structure of the report)
b) attach a screenshot(s) of your report(s) with all dimensions and measures visible and also paste your formula for Cycle time.