how to filter docker containers by their age [docker] [bash]

command.sh

# show containers in 'exited' state created more than 10 days ago (240 hours)
#   change STATE to the requested container state, can be 'exited', 'created' or 'running'
#   change HOURS to the requested time in hours
docker container ls -a --format \
  'HOURS=240; STATE=exited; TIME_CREATED="{{.CreatedAt}}";
  if [[ {{.State}} = $STATE ]]; then
    TIME_CREATED=$(date -d "${TIME_CREATED% *}" +%s);
    TIME_POINT=$(($(date '+%s')-$HOURS*3600));
    if [[ $TIME_CREATED -lt $TIME_POINT ]] ; then
      echo "{{.ID}}|{{.Names}}|{{.RunningFor}}" ;
    fi ;
  fi' | bash