Widen date/time space in notification area

[gogreen]

On my laptop I'd like to widen the day and date area so that the day and date fit on one line. For instance, for today, I'd like it to display "Thursday/09/15/2016." I have made this change in settings, and when I hover the mouse over that area, the display is correct. But because the display area is too small, it otherwise shows only the time. This works fine on my desktop PC--plenty of room there. So how do I widen the day and date area on my laptop? Or would shrinking the font size there let them fit, and how do I do that? Thanks.