In Debian derived linux there is one folder "/var/lib/dpkg/info" this folder contains all the information about all installed packages in your system.
By issueing the following command we get them by date time.
$ls -l /var/lib/dpkg/info
output is in alphabatical order.
To reverse the out put (i.e z to a)
$ls -l /var/lib/dpkg/info | tac
:)
