This is not a spark question, but I could not find a suitable forum, sorry:

I made a new post 1/2 hour ago.
The spark overview now says it was posted 1 day ago (in red text).
At the moment all new posts are posted 1 day ago, except one which is from 5 minutes ago.
There seem to be no related settings where I can fix it.

It is related to the time zone where the forumserver is located. It is 00:48 am there right now.

Well that's obvious ........................... once someone tells you!  

Wachtberger Posted at 2018-1-2 00:48
It is related to the time zone where the forumserver is located. It is 00:48 am there right now.

Yup..that's how it works ;-)

Thanks for clearification.
Now I would like to set my time zone. But that setting is apparently missing.

heliman Posted at 2018-1-2 07:08
Thanks for clearification.
Now I would like to set my time zone. But that setting is apparently missing.

Hi, Heliman. Can you tell me your location for further check? If there is anything abnormal, I would reflect the situation to our designated department. Thanks for your supprot.