[highmastdon]

Interesting perspective. I'd like to use that and say that we should have solar noon in the middle of our "awake" hours instead of in the middle of our work hours. This would benefit even more. We're not in a society where your activities are from dawn to dusk, more so, it's usually from dawn to dusk+evening time.

So, let's take the assumption that the average awake time is 7:00 - 22:00. Gives us 15 hours of awake time.

Solar noon should be at 7:00 + half of the awake time: 7 + 15/2 = 14.5 = 14:30

To calculate sunrise on the longest day and shortest day we use: 14.5 - half of light time

To calculate sunset on the longest day and shortest day we use: 14.5 + half of light time

This means sunrise and sunset in Amsterdam:

summer, longest day, 16:48, 16,8 hours:

- sunrise: 14.5 - 16.8/2 = 6.1 = 6:06

- sunset: 14.5 + 16.8/2 = 22.9 = 22:54

winter, shortest day, 7:41, 7.683 hours:

- sunrise: 14.5 - 7.683/2 = 10.6585 = 10:40

- sunset: 14.5 + 7.683/2 = 18.3415 = 18:20

Given this reasoning, instead of being GMT+1, Amsterdam should be GMT+3 all year round