Clock
Clock is a beautiful and customizable clock application. With Clock you can use the Bing's daily picture or use your own picture to display it in the app. Use it as you want, in full screen or on top of other applications. Also, you can configure the application to notify you when the time changes, in periods of 15 and 30 minutes, 1, 2, 3, 4, 5, 6, 7 and 8 hours you can choose, now you will always know what time it is.