Show HN: Sunsetter - find out when the sun will set over there (sunsetter.herokuapp.com)

Many times I've told myself it would be nice to take a picture with the sun setting right behind the mountain. I've searched the internet for an app that would tell me when this happens but all I could find were apps that tell you where the sun sets on a particular day, not the other way around. So I decided to build it...

Sunsetter is a simple python web app running on Heroku. It's based on the brilliant pysolar library for the hardcore astronomical calculations and binds it all to Google Maps with a dash of Ajax and JavaScript.