You need to set the time and date. Use this format;Thanks z970mp,
but this what I get when trying these :
Code:Ign http://archive.debian.org jessie InRelease Hit http://archive.debian.org jessie-backports InRelease Get:1 http://archive.debian.org jessie Release.gpg [2,420 B] Get:2 http://archive.debian.org jessie Release [148 kB] E: Release file for http://archive.debian.org/debian/dists/jessie-backports/InRelease is expired (invalid since 220d 14h 4min 3s). Updates for this repository will not be applied.
Maybe its normal ? dunno...
Code:
sudo date -s "28 SEP 2019 08:40:00"