What exactly is the geography behind daylight saving time?

It's less a matter of geography than one of politics and sociology. Benjamin Franklin first argued for daylight savings time back in the 18th Century. read more

[citation needed] For example, in the U.S. the period of Daylight Saving Time is defined by the Energy Policy Act of 2005. The period for Daylight Saving Time was extended by changing the start date from the first Sunday of April to the second Sunday of March, and the end date from the last Sunday in October to the first Sunday in November. read more

The Act extended Daylight Saving Time by four weeks from the second Sunday of March to the first Sunday of November, with the hope that it would save 10,000 barrels of oil each day through reduced use of power by businesses during daylight hours. read more