Comment 1 for bug 118514

For nearly two weeks, this bug isn't reviewed by any moderators. I think neither will this be fixed soon by Ubuntu people, nor will anybody submit a patch. For Chinese users, I highly recommend Lunar Applet 1.5 as a replacement. It provides a clock of 12-hour type, a lunar calender and a similar look to Gnome panel clock. However, it lacks Evolution support.

In order to install Lunar Applet 1.5, you have to add an extra source (via System -> Administration -> Software Sources):

deb http://ubuntu.cn99.com/ubuntu-cn/ feisty main restricted universe multiverse

After that, use Synaptic to search and install "lunar-applet", then add it to the panel (and remove the Gnome panel clock). Remember to disable the source above after installation, because there are several unsigned packages which you probably don't want.