I spent way more time than I care to think about figuring out how to get my porch lights to come on at 7am and turn off 10 minutes before sunrise without breaking when sunrise happened before 7am. I tried some serious Rube Goldberg nonsense in multiple iterations, until finally I decided to just add another “turn off the lights” at 9am every day. Most of the time it doesn’t do anything because the lights are already off, but on DST day it accomplishes my goal of making sure they don’t run all day, since 9am is always after sunrise.
I spent way more time than I care to think about figuring out how to get my porch lights to come on at 7am and turn off 10 minutes before sunrise without breaking when sunrise happened before 7am. I tried some serious Rube Goldberg nonsense in multiple iterations, until finally I decided to just add another “turn off the lights” at 9am every day. Most of the time it doesn’t do anything because the lights are already off, but on DST day it accomplishes my goal of making sure they don’t run all day, since 9am is always after sunrise.