Hi osman,
you might try my sun tracker circuit which is designed to control both azimuth and elevation angle of the solar panel.
It uses clear dome 10mm red LEDs as sensors and a homing circuit with selectable time to home towards sunrise position starting at the selected time when maximum West position is reached.
Near the equator the sun sets pretty rapidly and twilight duration is 20 to 30minutes. At 60deg North twilight duration might last up to four hours in summer time.
The sensor enclosure is made of a "bear brand" coffee creamer can. The picture shows it with two LEDs only.
Boncuk