find -not -newermt "nov 01, 2015" -exec mv {} /tmp \;
-not -newermt -> specifies the modification time of the file must be older (hence the -not)
find -not -newermt "nov 01, 2015" -exec mv {} /tmp \;
-not -newermt -> specifies the modification time of the file must be older (hence the -not)