Making an internet-connected clock is a lot harder than you'd think, but over on DIY Engineering, you'll find a three-part guide to build one for yourself.
The basic project here uses a RGB matrix, a custom circuit, and a variety of electronics parts to make an internet-connected scrolling display. That display can show the time, scroll a variety of graphics, and more. It's a tough project, but the end result is pretty cool. Head over to DIY Engineering's YouTube page for all three guides.