Is there summer and winter time for your controller?

No. No distinction is made. Even if we set the clocks back by 1 hour in summer/winter, the time on the controller does not change.

Suppose we set a light phase in the summer time from 5 a.m. to 9 p.m. Then we have 16 hours of light starting at 5 o’clock. If the clocks are then changed to winter time, the light phase will be the same length, but the light will shine from 4 a.m. to 8 p.m. In this case, the plants maintain the same light rhythm.