I thought I used the same code as before for the fonts, but apparently something is different then. I will investigate it. Maybe is due to a change in a QT Creator form after all.

Had the same idea about using a banner to inform about a restart to take effect, but it should be a message in the local language, like the rest. This is somewhat of a hurdle.

I do lose the dayname only if I select a GMT -10:30 timezone (in landscape mode). It may be due to the font, but also in dutch, the abbreviation is only two letters, not three like in your case.
I could remove the year to make room, but on the other hand I do like the added year. For space sake, I already remove the century digits.

How about I remove the year in landscape and only show it in portrait? I think the code change for that is not too big. The landscape notation would resemble the stock clock one, and the portrait mode (which has more space for this) would add something extra in this case.