Mageia forum

I have been able to add the day and date to the panel at the top of gnome, but I wish that it would show up as default in the next release.

That is not up to us, as we usually offer what upstream delivers. So you'd best report this as enhancement request in GNOME bugzilla https://bugzilla.gnome.org/
But from what I can see it is shown at the panel: https://wiki.mageia.org/en/First_step_with_Gnome