The Photographer's Ephemeris

TPE App Icon

The Photographer's Ephemeris (TPE) is the ideal tool for outdoor photographers who need to plan shoots using natural light.

Launched as a free desktop app in 2009 for Windows and Mac, we have since ported TPE to both iOS and Android.

TPE screenshot

TPE is a map-centric sun and moon calculator: see how the light will fall on the land.

TPE's map-based approach means you are not limited to a predefined list of locations, which often don’t include the places many photographers go. Instead, search for any place name on the planet or position the map pin exactly where you want it.

Advanced features including automatic time zone and elevation detection, correction for atmospheric refraction and height above the horizon, ensuring that you have the best possible information for planning your shoot.

You can even determine when the sun or moon will be visible behind nearby hills and mountains.

Here are just some of the features of TPE:

  • Time and direction of sunrise and sunset
  • Time and direction of moonrise and moonset
  • Phase of the moon and % illumination
  • Times of civil, nautical and astronomical twilight
  • Graphical display on a map
  • Save any location you want – no fixed lists
  • Automatic time zone detection for any location on earth
  • Determines elevation above sea level
  • View azimuth and altitude of sun/moon for any time of day/night
  • Distance, bearing and elevation angle between any two points
  • Find when the sun/moon will appear from behind a hill
  • Compensation for atmospheric refraction
  • Compensation for elevation above the horizon
  • Does not require network connection for rise/set times and azimuths. (Note: maps and elevation do require a data connection)

Find out more (and download the free desktop version) over at

Available on the App Store Android app on Google Play Facebook Page Google+ Twitter