@gwp1 said in Sanity check on rule: using the sun as a condition for Group reactions:
My sunrise/sunset OR is simply to act as the Condition noting the sun has "changed".
Yeah... doesn't work that way. between sunrise and sunset is true during the configured period, so the parent OR group is true. When sunset arrives, the first condition goes false but the second condition goes true in the same evaluation/instant, so the group remains true because both conditions were never false at the same instant, you just traded one for the other. There is no "dead period" between the two conditions, one changes to the other instantly, so the OR group never changes state (remains true forever with the conditions given).
There are many choices to get to what you want. I'm going to leave it to your creativity to imagine/solve. Hint: you can do it without changing the structure of this rule or its conditions and reactions, just by choosing condition options carefully in the right places.