Trying to change clock style, Please Help?

[Sage's Unicorn]

I had found out that by right clicking the clock on the bottom right hand corner I could change the style, I wanted the numbers bigger and the date to show and it worked fine for about a month.

Now I notice that sometime in the last couple of hours it reverted back to the normal clock style that it usually is and I can no longer right click on the time to change the style again, the only thing that I can do is change the time but I don't need to do that it works fine.

Can anyone please tell me where the files are located to change the clock style back to the larger one that I had?

Thank you very much;