"Many think that daylight saving time was conceived to give farmers an extra hour of sunlight to till their fields, but this is a common misconception. In fact, farmers have long been opposed to springing forward and falling back, since it throws off their usual harvesting schedule.
The real reasons for daylight saving are based on energy conservation and a desire to match daylight hours to the times when most people are awake. The idea dates back to 1895 when entomologist George Vernon Hudson unsuccessfully proposed an annual two-hour time shift to the Royal Society of New Zealand.
Ten years later, the British construction magnate William Willett picked up where Hudson left off when he argued that the United Kingdom should adjust their clocks by 80 minutes each spring and fall to give people more time to enjoy daytime recreation. Willett was a tireless advocate of what he called “Summer Time,” but his idea never made it through Parliament."
Why Do We Have Daylight Saving Time? | HISTORY
Well done, you know your history. There was strong opposition from farmers, scientists, and others. Farmers needed to follow the sun, not the clock and a clock change would put them out of sync with the non-farming world. Scientists worried about the lack of continuity of data collection, while those who had recently finally achieved a worldwide standard time zone system didn't want to introduce any irregularities.
Yet Willett was relentless in his pursuit of DST (later called summer time). But his repeated attempts to pass a bill in Parliament all failed, and Willett died in 1915, never seeing his idea come to fruition. So, which country was the first to adopt daylight savings time?
Word of Willett's concept had spread around Europe. As the First World War continued, Kaiser Wilhelm's Germany recognised that using Willett's DST would bring more sunlight to the evenings, replacing artificial lighting and saving precious fuel for the war effort. Thus taking the British idea, in 1916 Germany was the first country to adopt DST. Once it did so, Britain and European countries on both sides of the war quickly adopted DST, with the United States following suit on 31 March 1918, after it had entered the war.
After the end of the First World War, many countries, considering DST a wartime measure, discontinued its use. American farmers defeated urban dwellers and President Woodrow Wilson to get DST repealed, returning the US to ‘God's Time’.
When the Second World War began, all combatants on both sides quickly adopted DST to save vital energy resources for the war. The United Kingdom extended summer time to the entire year and later added double summer time (two hours advanced) in the summers. The United States similarly enacted Franklin Roosevelt's year round DST law 40 days after Pearl Harbour was attacked. With the end of the war, some countries abandoned their wartime DST while others continued it into the postwar years.