Windows 8 Clock Tile
From the Start screen you should see the tile for Store, just tap or click on the Store tile.
If you don’t see the Store tile, just start typing Store, then when you see it just click or tap Store.
Type The Time and press the enter key on your keyboard, look for the free app
You might have to verify your email address, which is a simple process, then the time tile will appear on your Start screen
Click or tap on The Time tile and a message will appear asking you if you want Time to run in the background and if you want to allow Time to run on the lock screen:
After you answer the messages you can easily move the Time tile by click/tap and drag.