I don't know why anyone has to change their clocks. Just go to work an
hour earlier in the Spring and an hour later in the Fall.
And when you arrive at the station to get your train to go to work, you
discover that fewer trains actually run in the rush hour, because the
timetable hasn't been altered, or you find yourself in a traffic jam
because the contraflow system is still set for non-peak hour traffic.
A lot more than just the times for going to work has to change. It's
hardly practical. So much simpler to change the clock twice a year, and
then forget about it.
Sylvia.