There is increasing talk about EU abandoning the Daylight-saving time rules and mostly move to UTC+2 throughout the year. This seems to be motivated by the desire to change the usual business hours for -1 hours relative to the Sun. But, if people actually want the business hours to be 8-to-4, why are they 9-to-5? I could not find the reason for this convention. If there is a good reason, then further departing from the solar noon would probably lead to moving the working hours again.