I like not to know time when I'm using my computer. I found how to turn it off on my desktop but I didn't find how to turn it off before login into my session (it still appears in small on top of my screen) and when I start my computer again after it has gone into standby mode (it then appears in big in the middle of the screen). I can live with it but now that I've got plenty of time (thx quarantine) I thought it could be the time to fix it! ;) Any ideas welcome and have a great day! Guigeek
PS: I'm not really an advanced user of commands, codes and so on, I would probably need some step by step solution.
EDIT: OS is Ubuntu 18.04.01. Question is about lock screen and login screen and not about desktop.