Change Accounting Calendar from Fiscal to Calendar

Summary

Has anyone been successful on changing an accounting calendar from fiscal to calendar?

Content

We follow a State's reporting calendar and they are changing from Fiscal to Calendar. I know it is not possible to change a an accounting calendar while in process but has anyone done a change in calendars for a future period? Possible creating a calendar with 18 months as a bridge to the next full calendar year period?

Our Fiscal period starts in July so July 2019  = 1-2020.

 

Thank you,

Brian Burns