Daylight savings time is the process by which modern societies adjust the clock in order to capitalize on the increased sunlight during the summer months. They do this by moving the clock forward one hour ahead in the spring. This results in a shorter period of sunlight in the morning but a longer period of daylight in the afternoon. In the fall, once the long days of summer are coming to an end, the clocks then return to normal and daylight savings time comes to an end. Various means of capitalizing on the extended daylight of summer have been around for thousands of years. Some, though not all, involved adjusting the clocks. The modern method of adjusting the clocks for daylight savings time was first proposed in 1907 by William Willett. It took a few years to become popular, but by the time WW I began, daylight savings time was in widespread use across the country. As the nation worked overtime to meet the demands of the war, the extra daylight was needed. Now, almost every industry depends on daylight savings time to increase productivity, revenue and overall business.