I'm trying to figure out how to have something trigger one hour before sunset. I've found Bigtimer, but it's not respecting the offset when I use "Sunset" as the trigger time. I haven't found very detailed documentation on it, everything just points back to the blog post which isn't really comprehensive.
Here's how I have it setup:
I have tested the offset by manually setting an "On Time", then using a negative On Offset (just like shown here), and it triggers just when I expect it to.
But when the On Time is set to Sunset, it seems to ignore the On Offset and just fires right at Sunset. Is there another way to do this?