sorry, I cannot seem to be able to edit this post and this forum messes with the code and has no preview button 
# get all esx hosts in Datacenter
my $esxhost_view = Vim::find_entity_views(
view_type => 'HostSystem',
properties => [ 'name', 'config.dateTimeInfo', ]
);
for my $host ( sort { $a->name cmp $b->name } @$esxhost_view ) {
print $host->name . "\n";
#print Dumper $host;
print $host->config->dateTimeInfo;
}