K4 K4 NT Clock-Date Screensaver

I have a K4 non-touch. I want to turn it into a digital clock when not in use. I want it to display:

1. Time
2. Date
3. Phase of moon (if possible)

Is there such a screensaver for my Kindle?

In case there isn't, where can I find the information to design such a screensaver myself? This is the tentative algorithm that I've thought of:

1. Disable the screensaver that kicks in after 2 minutes of inactivity.
2. Display the time, date & phase of moon in large block font.
3. Go into sleep mode for 60 seconds.
4. Wake up. Goto step 2.
5. Escape from this loop if the power button is pressed.

There must also be a way to disable this screensaver and revert to the normal one.


Thanks.