this post was submitted on 09 Mar 2024
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Why would you not want perma DST? If you live in Ontario or Quebec, having one more hour of daylight in the afternoon is much better than sunrise an hour earlier.
You realize that the amount of daylight does not change, right? The important thing to me is that noon should be as close to midday as possible.
Why is that important?
There are actual health recommendations based on solar time. For example, we are cautioned to be especially careful of summer sun exposure between 10 am and 2 pm. As far as I know, that makes sense only in the context of solar time: the 2 hours on either side of when the sun is at it highest (solar noon.)
Unless there is something about the actual timing of the risk I don't understand, under DST the recommendation should be "between 11:00 am and 3:00 pm."
Where I am, in Saskatchewan, my local time is about 1.5 hours distant from solar time. Thus, that recommendation should be "between 11:30 am and 3:30 pm," although I suspect 11-3 is close enough.
That would require a lot more timezones. Solar noon fluctuates by an hour depending on which side of the same time zone you're in, and that's not even considering all the timezones that are offset for geographical convenience.
I obviously didn't write clearly. I'm not objecting to DST or timezones as they exist. I'm was trying to point out that there are unresolved disconnections between solar time and the ways we want to set our clocks.