I am a newbie in this Linus world.
Yesterday only I have installed the latest Manjaro GNOME.
Earlier the date, time and notification panel was their in the middle
But today after a normal restart it have shifted to the extreme right corner.
Looks like Gnome extension: Dash To Panel.
Please look at the configuration of DtP (via App “Extensions”):
Tab: Position, near the bottom = “Date menu” ==> change to: “Monitor Center”