So this chart doesn't measure sunlight levels through the day, but whatever the maker has decided which color corresponds to "reasonable" based on arbitrary numbers... Who the fuck cares about which numbers are assigned to which parts of the day?!?!
The reality is that most people work according to a fixed schedule, and the companies that they work for are not going to change that anytime soon. Opening hours of shops, banks, offices, etc don’t adjust to accommodate daylight savings, no matter how much you think those numbers are arbitrary.
Add to that that many people set their alarm such that they will be in time for work, and they still want to sleep 7-8 hours the next night, so in effect their job dictates their waking hours and the arbitrary numbers that we give to hours dictate the amount of daylight that they get.
Wait, are you arguing for or against DST? DST solely exists because of the position of the sun at different times of the year. The downside is that everyone has to adjust their internal clock twice a year. If we just choose one timezone and be done with it, we can let the sun do its thing and follow our regular schedule throughout the whole year. If that’s what you’re saying, I agree. Then still, I’d pick the option that benefits most people in terms of daylight hours.
So this chart doesn't measure sunlight levels through the day
What do you mean by "sunlight levels"?
Depending how north or south you are is how much much total light you are going to get. Shifting an hour does not add or subtract total sunlight time.
The whole point of daylight savings time is to get the "arbitrary numbers" to line up to a daily schedule.
This chart shows you how well the three systems would achieve getting you those "arbitrary" times.
If the sun rose at 4 am and set at 1:30 pm. Sure, you could plan your whole day differently around that. Wake up at 4am instead of 7am. Go to bed at 8pm instead of 11pm. Work at 6 am instead of 9am, get off at 2pm instead of 5pm.
Yes they are "arbitrary" but humans are not computers. Having to go to bed at 8pm to wake up at 4am is different in our minds than going to bed at 11pm and getting up at 7am. Still 8 hours of sleep but it is perceived quite differently.
I think there's a misunderstanding here. The point is that we move our clocks forward one more time in spring for Daylight Savings Time, and then we never change them again.
The difference between "ending" DST and making DST permanent is either keeping 4:30pm sunsets in winter or having the mornings be dark in the winter. Both are ways we stop changing our clocks.