Around the equinox sunrise is probably around 8:30-9am here, sunset around 3:30-4pm. Twilight I guess an hour each way. That makes sense when you need daylight

Around the equinox sunrise is probably around 8:30-9am here, sunset around 3:30-4pm. Twilight I guess an hour each way. That makes sense when you need daylight to work - which is back when far more worked outside. Core business hours and timezones seem to fit around that minimum daylight. It makes a lot less sense to tie daylight hours, when they are in short supply, to the time now most of us are in permanently illuminated offices and factories.