Daylight Savings Time

Many Countries - In North America, Starts 1st Sunday in April - Ends Last Sunday in October

The idea of daylight saving was first conceived by Benjamin Franklin during his sojourn as an American delegate in Paris in 1784, in an essay, "An Economical Project."

The main purpose of Daylight Saving Time (called "Summer Time" many places in the world) is to make better use of daylight. We change our clocks during the summer months to move an hour of daylight from the morning to the evening. Countries have different change dates.

In the winter, the afternoon Daylight Saving Time advantage is offset by the morning's need for more lighting. In spring and fall, the advantage is less than one hour. So, Daylight Saving Time saves energy for lighting in all seasons of the year except for the four darkest months of winter (November, December, January and February) when the afternoon advantage is offset by the need for lighting because of late sunrise.