### CONTEXT (Previous Events):
<system_output timestamp="2839.881698">Get: 13 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libglx-mesa0 i386 22.3.6-1+deb12u1 [156 kB]
</system_output>
<system_output timestamp="2839.885239">Get: 14 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libglx0 i386 1.6.0-1 [36.6 kB]
</system_output>
<system_output timestamp="2839.887361">Get: 15 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libgl1 i386 1.6.0-1 [82.1 kB]
</system_output>
<system_output timestamp="2839.890056">Get: 16 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libxcb-shape0 i386 1.15-1 [106 kB]
</system_output>
<system_output timestamp="2839.903804">Get: 17 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libxkbfile1 i386 1:1.1.0-1 [78.9 kB]
</system_output>
<system_output timestamp="2839.905712">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2839.914664">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2839.91595">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2839.91677">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2839.919957">Get: 22 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 x11-xserver-utils i386 7.7+9+b1 [171 kB]
</system_output>
<system_output timestamp="2839.932166">Get: 23 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 xdm i386 1:1.1.11-3+b2 [186 kB]
</system_output>
<system_output timestamp="2839.951901">Fetched 43.2 MB in 2s (28.8 MB/s)
</system_output>
<system_output timestamp="2840.016712">install_packages: executing  aptitude -R -d -o Aptitude::Log=/dev/null -o Aptitude::CmdLine::Ignore-Trust-Violations=yes -o APT::Get::AllowUnauthenticated=true -o Acquire::AllowInsecureRepositories=true -o DPkg::force-conflicts::=yes -o Dir::State=/usr/fai/mirror/aptcache/var/lib/apt -o Dir::Log=/usr/fai/mirror/aptcache/var/log/apt -o Dir::State::extended_states=/usr/fai/mirror/aptcache/var/lib/apt/lists/extended_states -o Dir::State::status=/usr/fai/mirror/aptcache/statefile -o Dir::Cache=/usr/fai/mirror/aptcache/var/cache/apt -o Dir::State=/usr/fai/mirror/aptcache/var/cache/apt -o Dir::Cache::Archives=/usr/fai/mirror/aptcache/var/cache/apt/archives -o Dir::Etc=/usr/fai/mirror/aptcache/etc/apt/ -o Dir::State::Lists=/usr/fai/mirror/aptcache/var/lib/apt/lists/ -y install xterm
</system_output>
<system_output timestamp="2840.063437">Reading package lists...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="2840.301993">Building dependency tree...
</system_output>

Answer: 2840.301993, old event