This should be am not pm

The date and time is correct every where else but not current Time: So Staff are changing their time zones to try and correct this but that is in fact putting them out. Can I change it so it doesn't display am/pm or better still fix this?
All the other time zone settings are checked and correct, and then checked again and again and checked once more. (truth be told about 15 times)
Maybe here?
<?=Format:($cfg->getDateTimeFormat(),Misc:(),$rep,$rep)?>
Thanks for any help :)