Hi mT8RQf
This will be fixed in Whonix 14 as per:
https://github.com/QubesOS/qubes-issues/issues/3469
Note:
In the future, please type any error messages, keywords, questions, etc in the forum search engine (upper right hand corner of your screen). This keeps information on a topic from being spread out over multiple forum threads.
Using the following snippet from the error message…
"ERROR: Systemd Clock Check Result:
Unexpected results by timedatectl.
timedatectl_output_pretty:
Produces several “hits” including the following thread which answers your question (provides a temporary solution). This thread can also be used for any follow up questions.
https://forums.whonix.org/t/qubes-r4-0-rc4-system-time-errors/4844
P.S. This is not a big deal. I do this myself on occasion 
@0brand Closed This thread as a Duplicate Topic