Thanks for this.
Over the years I've decided the gradual adjustment lat/long bits are really a negative feature. It engineer cool but it's counterproductive to the goal.
I want the monitor dim between 7pm and 630am regardless of time of year so I cronned that into redshift.
Your body clock probably wants the full blue light in the am fwiw.
I'll give sct a try to see if its more pleasing to the eye.