Rpm package installation history

If you need when the packages installed in Red Hat or Fedora

rpm -qa --queryformat '%{NAME} || %{INSTALLTIME:date}\n'

output:
gnome-bluetooth || Mon 06 Aug 2007 05:05:55 PM EEST
gnome-screensaver || Mon 06 Aug 2007 05:06:24 PM EEST
evolution-webcal || Mon 06 Aug 2007 05:07:06 PM EEST
gnome-system-monitor || Mon 06 Aug 2007 05:07:51 PM EEST
smartmontools || Mon 06 Aug 2007 05:08:15 PM EEST
perl-Test-Harness || Mon 06 Aug 2007 05:08:18 PM EEST
system-config-network || Mon 06 Aug 2007 05:08:22 PM EEST