Daylight saving time, explained

Find out the history behind daylight saving time and why some places participate while others opt out.
About 70 countries around the world practice Daylight Saving Time. Find out who came up with the concept of Daylight Saving Time, where the time change was first enacted nationwide, and why some countries are attempting to eliminate it.

One problem with permanent Daylight Saving Time: Geography

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Daylight Saving Time explained

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Dark mornings ahead: Permanent daylight saving time would push

One problem with permanent Daylight Saving Time: Geography