Entomologist George Hudson develops the first proposal for Daylight Saving to have more after-work hours of daylight to collect his bugs
William Willet publishes his proposal to advance the clock during the summer months after observing how many people slept through a large part of a summer's day
Participating war countries, and some neutral nations, adopt Daylight Saving Time in order to save coal and other resources.
The United States and Europe widely adopt Daylight Saving Time in order to conserve energy.
