This app was mentioned in 7 comments, with an average of 2.57 upvotes
I really like TerraTime - it gives me a clock, that shows me sunrise, sunset, how much daylight there is, and when moonrise/set and phases.
Personally I set 'midday on top', turn off the 'minute' hand, and set it to a 24hr view.
I like TerraTime Pro for a Live Wallpaper. It takes a little bit of playing around to get it to align the way I want, but when it does it looks great. You can also turn on ice and clouds to give you a "realtime" view of the Earth updated with satellite data. I turned them off so that I could see notifications a little better, but I usually leave those settings on to see active cloud cover and to watch storms.
TerraTime is one of my favorite apps. It's not as fancy as the stock live wallpaper but it is very similar. It can't do the ambient display stuff but it will give you all of the other accurate info.