I have a fairly simple, and I imagine common, use case.
I have a motion sensor that triggers a light in my entryway.
I want it to activate after sunset.
The only options I have for “time window” are “Start Time” & “End Time”.
I wound up having to change the time window multiple times a year to deal with the change of sunset time throughout the year.
A Smart Lights automation can also be triggered at sunrise, at sunset, or at a specific time (as demonstrated above), as well as when the Mode changes.