The first thing I brought up
Was Maps on your smart phone.
It is very cool.
To see which part of earth is lit up.
This time I'm asking you to go and get an app
Moon Globe is the name, it's free.
It allows you to see the phases of the moon.
Predicts when there is going to be a full, quarter moon etc.
Check it out.
Then think about how could this work on a FE?