All you would need to do is obtain your reports directly from the CRAs. Equifax reports list the DOFD, and drop off date is 7-7.5 years from that date. TU and EX reports list the estimated date of removal.
FCR doesn't show a drop off date. Though if you are subscribed, you can view your report and click on "dispute" (you won't need to dispute anything). Verify the info and it will show you a new report. That report will have drop off dates.
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