find file in given date range

find . -type f -newermt "2016-12-10 00:00:00" ! -newermt "2017-02-25 18:50:00"

find file modified in the pass 75 days

find . -mtime -75

references:

http://unix.stackexchange.com/questions/29245/how-to-list-files-that-were-changed-in-a-certain-range-of-time

http://stackoverflow.com/questions/848293/shell-script-get-all-files-modified-after-date

http://askubuntu.com/questions/191044/how-to-find-files-between-two-dates-using-find