Here in Florence, Italy with my old API key on WU, I have a strange behavour.
The date shown is for Jan(uary) rather than Jun(e) and the sunrise/sunset hours are correct.
For January !
Opensprinkler programs with sunrise/sunset assume that is January,
but the date shown in the main screen is the actual one, June 16th
Somehow, the weather forecast seems correct for June.
With OWM the sunrise/sunset hours are correct for June,
and watering programs with sunset/sunrise starts at the correct time