I couldn't find chronos in Cydia? Are you running it with something else? I like this set up. I did have the time on the status bar in the lock screen but sometimes it shows up and sometimes it doesn't
Chronos is on this repo...
http://cydia.myrepospace.com/ImLemon*Partying
REMOVE * as MacRumors would not let me insert the specific name
You will need to install Cydget as well as this is a widget for it.
I did NOT install this version, but instead installed an altered version of Chronos found on Reddit.com as it's a larger size and automatically moves the clock to the top when you receive a notification....
http://www.reddit.com/r/iOSthemes/c...ing_chronos_cydget_to_match_jellylock/cf4p1io
In the highlighted section, you will see download links. I installed the "Large - Glow" version
Once you download it, use Cydia app 'Ifile' (or another program which can see file directory) to unzip/unarchive it and then move folder to "/System/Library/LockCydgets/". You then activate it within the Cydget setting and respring.
If you don't want the altered one, you can install the normal version from the repo provided above. It will install to the correct folder and all you have to do is activate it with the Cydget settings.