Fibaro works with sunrise values as a string such as: "07:30" You can calculate it also yourself: And @jgab also writes extensively about his event model: ...but   to get more experience and explore the possibilities and pitfalls I want to run my own "poor mans" main scene for at least a year. Now I want to execute commands which are related to sunrise or sundown or seasonal changes. For instance: in summer I want my curtains open at 07:00, in winter around 0