My postgresql version is
root@server:~# apt-get -s install postgresql
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
postgresql is already the newest version (15+248).
postgresql set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
psql (15.6 (Debian 15.6-0+deb12u1))
Should I install an older version, or is there a default type of timestamps which can be modified?