If your UnrealIRCd is up and running but you have a question about it, then use this forum.
(NOT for installation or connecting issues! Use the other forum instead.)
On the server did yum install ntp but was already installed on both servers. I tried to find it in unrealircd.conf but I can't find it. Is there a way to fix this manually?
The time on that last server is really off (irc.chat-garden.nl), you can check yourself by running 'date' on the shell. You better fix the time (and NTP) on that machine. After that, but really only after(!) the system time has been corrected, you could run "/TSCTL OFFSET + 0" on that server. This will reset UnrealIRCd's offset/compensation.
Note by the way that right now the server is running fine thanks to UnrealIRCd's timesynch feature. But I presume you want to fix it nonetheless.