I should make a youtube video on this once I understood it. Need to boost my Youtube subscriber number for $. I noticed in Nov/Dec the Sunset time reverses sooner than the Sunrise time. Here's the answer.
Source: Steve Ford: If the Sun were to culminate every day at 12 you would be correct to assume that the times for sunrise and sunset should be symmetrical around noon. However, since the Earth is not moving around the Sun in a perfect circle the angular velocity over the sky as seen from a fixed observer on Earth varies through the year giving rise to what is called Equation of Time, meaning that the sun will not culminate at the same time of day through the year (our clock is based on what is called Mean Solar time which fits the average yearly angular speed of the Sun). During fall and early winter the sun will, due to equation of time, culminate later for each day totaling a difference of around 30 minutes from fall to early winter. In this period, the rate of increase in time for culmination almost cancels the rate of decrease in time for sunset, whereas it almost doubles the rate of increase in time for sunrise.
Source: Filip Larsen: If the Sun were to culminate every day at 12 you would be correct to assume that the times for sunrise and sunset should be symmetrical around noon. However, since the Earth is not moving around the Sun in a perfect circle the angular velocity over the sky as seen from a fixed observer on Earth varies through the year giving rise to what is called Equation of Time, meaning that the sun will not culminate at the same time of day through the year (our clock is based on what is called Mean Solar time which fits the average yearly angular speed of the Sun). During fall and early winter the sun will, due to equation of time, culminate later for each day totaling a difference of around 30 minutes from fall to early winter. In this period, the rate of increase in time for culmination almost cancels the rate of decrease in time for sunset, whereas it almost doubles the rate of increase in time for sunrise.