Sometimes you end up with a system having files modified in the future. At one time this happened to my Raspberry Pi, who was set up to sent me an email when something was wrong. After a friendly reminder every hour, I set out to find the files, and change their date to something sane.

Using find, this give a list of the files:

find . -newermt "5 days" -ls

Combine it with touch , to change the date to the current.

find . -newermt "5 days" -ls -exec touch -c {} \;