Find all files modified on a certain date or between dates on Cpanel CentOS Linux

Recently we had a site that was hacked and we needed find all of the files that had been modified on a certain date.  We used this Linux Find command to find and list the files modified between May 19-21, 2015:

find /home/mysite/public_html -newermt 2015-05-19 ! -newermt 2015-05-21 -ls

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