The Photographer’s Ephemeris is a great tool for landscape photographers. Using the tool you can pick a location anywhere in the world and work out not only the sunrise and sunset times but also the angle of the sunrise/sunset so if your wanting to plan a sunrise across a river or a mountain range you can work out the best time of year to do the shot.

Photographer’s Ephemeris is free and is an Adobe Air application so is multi platform. It’s easy to install and use and the results are great. Alongside the Air application a version has been written for iOS devices. This however is not free, currently retailing for £5.49 in the UK. This version is iPhone only at the moment but an update is coming which will move the application to being universal with iPad support.

The application is similar to the desktop version but I find it easier to use via the touch interface. Like the desktop version moonrise and moonset angles/times are also included alongside the ability to find out when the sun will appear from behind a hill – ideal for scouting out locations prior to a shoot.

It’s app’s like these that I find so compelling on mobile devices. Focussed, simple to use but very helpful.