Report/Log for Fiscal Calendar maintenance

SOLVED

Is there a report or log that shows Fiscal Calendar changes?

We are in period 10 of 12 for 2016, and somehow period 8 START date was inadvertently changed from 01/06/216 to 06/01/2016.  The start date is not even an editable field.  No other dates were wrong in the "fiscal calendar setup". 

Any ideas how this could have occurred?  And/or where we could find a report or audit log that would show us this field being changed - by whom and when?

Thank you in advance.

Jeanette