Where I live in Michigan, sunrise this time of year is about 8:15 AM, while sunset is around 5:15 PM. Centered on the winter solstice, a graph of sunrise and sunset through the year looks like this (sans Daylight Savings Time):
A close look at this graph suggests a couple oddities. First, even though the Earth's orbit is more or less circular (eccentricity 0.017), the curves don't look quite like sine waves; the sunset curve looks flattened on the right (winter and spring), while sunrise looks flattened on the left (summer and fall). Second, the earliest sunset seems to happen before the latest sunrise. Let's check:
Sure enough, the latest sunrise is more than three weeks after the earliest sunset, and neither falls on the winter solstice.
My guess is that this asynchrony is due to the rotation of the solar terminus as the Earth revolves around the sun.
i.e. the day/night line is rotating away from us, making both sunrise and sunset later. That will continue until the 5th, when the effect of the Earth's tilt relative to the sun will make a bigger difference than the revolving solar terminus.