Show the date on the System Tray in Windows 10

I have my Taskbar moved to the left side of the screen. How do I show the date below the clock on the system tray?

Windows 10 is quite new, so there isn't much on the internet about it.

I found out the same problem in my horizontal Taskbar. It turns out that when "Use small taskbar buttons" is checked, the taskbar height is not enough to house the time and the date strings, so the date string is dropped.

Unchecking "Use small taskbar buttons" or doubling the taskbar height are the two solutions I found... but they neutralize my initial intention of a smaller taskbar taking up less space.

[EDIT] After reading Why you should use a vertical taskbar I tried it and also realized that you get the full time and date already from the smallest size of the vertical taskbar, even with small taskbar buttons. So it might have changed since the time the question was asked. Now, this might be your solution if you like the side bar, or you are willing to try and reap some of the benefits that article claims.

T-Clock is a little tool which solves this: http://github.com/White-Tiger/T-Clock