You inspired this, @RogerSeheult. We checked it in 33,000 clock changes from ~25,000 people: bodies don’t fully follow the clock. After clocks went forward, bedtimes ran ~12 min late and were still ~11 min late 3 weeks on. Spring clock change hits harder than autumn.
Here's just one issue associated with taking light in the morning and putting it into the evening:View quoted post on X
ST: more morning sunlight in the eyes which advances an already delayed circadian rhythm (green arrow)
DST: more evening sunlight in the eyes which delays an already delayed circadian rhythm which causes sleepiness in the morning and insomnia at night. (red arrow)