I got a question from Katy about finding StatusBarCustomClock.
In order to find StatusBarCustomClock, in Cydia, you must have Insanelyi Repository as one of your sources. In order to add Insanelyi, go into Cydia and go to Manage> Sources> Edit> Add and type in http://repo.insanelyi.com/ and that will give you access to things on Insanelyi. Go back to the search and look for StatusBarCustomClock and you should be able to find it.
For future reference, that's how you would add any new sources.