Calendar recover

We create update STD calendars in December to exclude dates (holidays, etc.) to prevent jobs using the calendar from loading into the schedule.  These are normally updated once per year, however, one of the calendars were updated 2X since 10/2025.  

While I don’t think it’s possible, does anyone know if there is function, job, etc., we can run that would show the calendar Holidays prior to 10/2025 for a specific calendar?