Daylight Saving Time ends at 2:00 AM tomorrow. Clocks will need to be set back an hour for most of the country, Canada and Mexico’s northern border cities.
The practice of setting clocks ahead in the spring and back in the fall first occurred during the First World War to reduce evening usage of incandescent lighting, formerly a primary use of electricity. The practice has been both praised and criticized. Adding daylight to evenings benefits retailing, sports and other activities that exploit sunlight after working hours. But it can cause problems for evening entertainment and other occupations tied to the sun. (from me and Cute Calendar)