With non-UEFI guests, iohyve [https://github.com/pr1ntf/iohyve/issues/305 can't set RTC to UTC]. You need to either [[Configure Linux distributions that use systemd to use local time for RTC|set-up guests to use localtime]], or pass extra parameters to bhyve like this

== References ==

* [https://github.com/pr1ntf/iohyve/wiki/Manual iohyve(8)]