change file date and time, easy:
eg, pdf file, turn off internet connection, change the date and time you need, open it with libreoffice draw app, export it again,
done!
Exiftool, not working, forget it!
command line:
exiftool.exe -modifydate= yourfilename.jpg
exiftool -AllDates=”2021-04-01 18:25:07″ -DateTime=”2021-04-01 18:25:07″
exiftool -AllDates=”2021-04-01 18:25:07″ -DateTime=”2021-04-01 18:25:07″
