Updating rule trigger time from another rule

[ubeaut (Greg)]

Maybe this:

CivilDusk Time Offset

OpenHAB Version 3.0.1 How do you set up a rule to turn on a light 30 minutes before CivilDusk, say? I am moving over from HomeSeer, and this seems like it should be simple to do. Although it seems easy to do it at CivilDusk, I can’t figure out how to add an offset using either the UI or the “Code” window like I see in some OpenHAB 2 examples in code. Suggestions?