Remove all packages installed after a certain date/time

gistfile1.txt

Specific date %d-%m-%d replace on here,

grep "2020-12-9.*.install " /var/log/dpkg.log | awk '{ print $4 }' | cut -d: -f1
You get a list of packages,

libck-connector0
libgssrpc4
libkadm5clnt-mit9
libkdb5-7
libkadm5srv-mit9
libgnutlsxx27
....
....
Append them to the list of Apt command arguments with xargs:

grep "2020-12-9.*.install " /var/log/dpkg.log | awk '{ print $4 }' | cut -d: -f1 | xargs sudo apt-get --yes purge