Since all the displays are widescreen now, I like to utilize all the available vertical space for my apps. So, I keep the XFCE Panel on the left side in a vertical orientation. This worked great for everything, except the panel clock. The width of the Panel was too less for the clock to show time in digital mode. And in analog mode, the hour hand of the clock is quite confusing to read.
I was wallowing in this situation until I discovered the Orage Panel Clock. This XFCE Panel plugin can be added just like any other Panel plugin.
Installing Orage is easy:
$ sudo apt install orage
After this it will appear in the Panel plugins list, so can be added just like any other plugin.
Features I love about the Orage plugin clock:
The digital display can be rotated 90 degrees clockwise or anti-clockwise. This is perfect if your Panel is vertical.
The foreground and background colors and font and font size of the display can be configured.
Multiple lines of clock display can be configured. For example, Line 1 can be the hour and Line 2 can be the minutes.
Tooltip when mouse is hovered over clock can be configured to show anything you want.
Clicking the clock shows the Orage calendar.
Tried with: Orage 4.12.1 and Ubuntu 14.04