Daylight saving time is the practice of temporarily advancing clocks during the summertime so that evenings have more daylight and mornings have less. Typically, clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. Modern DST was first proposed in 1895 by George Vernon-Judson and it was first implemented during the First World War. Many countries have used it at carious time since thing.
SpringAhead .99 for iOS
Discover when and where people observe Daylight Saving Time and Summer Time, and when you should switch your clocks.
Twirl the globe, zoom in with a pinch, and tap on a country. Or type in a country name. You’ll learn whether or not that country observes Daylight Saving Time, and if so, what date and time it will start or end during any given year.
Share the dates! You can remind others to spring ahead or fall back thanks to the app’s full integration with email, Facebook, and Twitter.
In addition to must-have information about places, dates, and times, this interactive eBook explores the rationale behind Daylight Saving Time, its history, and its unintended consequences. Does having more daylight in the evening really save energy? How can Daylight Saving Time switch the birth order of twins? How did Daylight Saving Time thwart would-be terrorist bombers?