I can see no key for what tells me what each item on the soluner  clock is about.

For example:   1)  What is the solid black line on the clock indicating?

        2)  What is the blue pie shape indicating?

  Could you please provide a key that tells us what is what on this site?   There are many symbols,  and they all signify a meaning for something.  It would be very nice to have a key that tells us what these symbols and the like mean.

In the meanwhile,   could someone tell me about the first two examples?