Hello, I've found my solution to my problem, it's very easy : in "Situation" window, set "Time zone" to UTC+0.00. Sorry to have posted too quickly a so simple question. I don't know how to close (even delete) this thread.
Hello, I use Stellarium 18.0 on my Windows computer which is already set in UTC time. How can I set Stellarium to use UTC also, definitively ? Thank you for your help.