How Sousse's times are computed
For Sousse (35.83° N, 10.63° E) Hourora computes the sun's position for each date and solves for each prayer: Fajr 18°, Isha 17°. Asr uses the standard shadow rule. The times are shown in Central European Standard Time, daylight saving included.
The default is the method usually published in Tunisia: Muslim World League. You can choose another method, the Asr rule and the high-latitude rule above; the choice is saved on this device.