Take a look at how many minutes of sun we gain and loose.
The following chart is for Minneapolis/St Paul MN (MSP)
Basically 417 minutes = 6 hours gained and lost every year.
Here is the same chart for St Cloud MN (STC) with nearly the same amount of loss and gain every year.
And now the Eau Claire WI (EAU) sunshine minutes gain and loss chart.
As you can see from all 3 charts above, we have just about lost the maximum amount of daylight for this year.