Hi, thank you for trying to help. 
I get a command not found for systemctl
I can sync, the output time is Sat, Oct 29 06:29:41 BRST
which is I think a timezone for the westernmost part of Alaska, Ardak
So I set my timezone in php.ini to America/Ardak 
and also in customer and backend profiles
back to scheduling a campaign, 
the system time in mailwizz is now Fri, Oct 28 11:29 pm 
If I could understand where the times are coming from? Where does MW take the time from? Where does the server take the time from? 
What does php.ini timezone settings actually do? 
I thought, if I set my timezone in costomer profile, then mw would know, I am in Europe, and get my local time, so that I can schedule campaigns easier. But I set one timezone and mw shows completely differennt one... 
I am sorry, maybe these are very stupid questions but I have never done anything with bash commands or in php 
I just got a script and installed it on the server. For everyone who bought the script everything went just fine. 
Only for me, not. 

 So I asked the guy who wrote the script what to do, and he told me to change php.ini
I did, I tried all sorts of combinations, and the problem persisted. 
Maybe, if I could understand how the time settings should work Ii would understand what's going wrong here