Daylight saving time, or DST, this year in most of Canada, a lot of the U.S., and a little of Mexico began March 11 at 2 a.m. local standard time and ends Sunday at 2 a.m. local daylight time.
As a result, most Canadians, many Americans (comparatively), and a few Mexicans (relatively) are able to turn back the hands of time this weekend, regaining the hour of sleep now that they lost more than seven months ago.
This extra rest is especially welcome for many worn-out people in the wake of Superstorm Sandy, aka the Frankenstorm not only because of its monstrous size but also due to its hybrid nature as a horrific whole made of disparate parts.
DST is employed in the U.S. except for most of Arizona; Hawaii; and the territories of American Samoa, Guam, Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands.
Multiple aspects of DST -- its history, impact on health, and timing, among others -- are well covered at the eminently useful timeanddate.com.
Less informative (possibly) but more entertaining (probably) is this YouTube video in which you can watch Tyrone Davis "Turn Back the Hands of Time" as you do the same: