The sun, to the second.
Sunrise, sunset, solar noon, twilights: Aphélie tracks the sun's course second by second, for 7,324 cities or any point on Earth — and tells you how much light each day gains or loses.
Get Aphélie — €0.99One-time payment. No subscription. The app opens immediately after checkout.
Works on iPhone, Android and computers.
What Aphélie computes for you
To the second
Sunrise, sunset, solar noon and the three twilights — civil, nautical, astronomical — computed to the second (NOAA solar algorithm), for today or any date you choose.
How fast the days change
The exact length of the day, and above all its trend: how many minutes and seconds of light you gain or lose from one day to the next, through the seasons.
Two places side by side
Compare the light of two cities: which one rises earlier, which keeps the sun longer, where twilight lingers.
The whole world
7,324 cities on every continent — or any GPS coordinates. Midnight sun and polar night included.
No App Store, no Play Store
After checkout, the app opens in your browser. Add it to your home screen in two taps ("Add to Home Screen" on iPhone and Android): it installs with its icon and then works even without a connection.
Who is it for?
For photographers chasing the golden and blue hours. For sailors and amateur astronomers, who already live by nautical and astronomical twilight. For anyone who runs, gardens or drives by natural light — and for everyone in the North counting the minutes won back as winter ends.