https://www.timeanddate.com/time/dst/history.html
While Germany and Austria were the first countries to use DST in 1916, it is a little-known fact that a few hundred Canadians beat the German Empire by 8 years. On July 1, 1908, the residents of Port Arthur, Ontario, today’s Thunder Bay, turned their clocks forward by 1 hour to start the world’s first DST period.
So, it was a WAR plan by Germany - that makes sense - confuse your enemy.
What doesn’t make sense is why the US and other nations did it. Changing the clock does not change sunrise & sunset.
Dumb, dumb dumb!!!!!
Leave it up to a bunch of Ontario royalists to invent something so stupid as DST.