This is a reminder that on Sunday, November 2, 2014, at 2:00 (2 am) clocks will be set back one hour as Daylight Saving Time (DST) ends in most of Canada, United States, and Mexico’s northern border cities.

So if you forget to change your clocks on Saturday night (the time change takes effect on Sunday in the very early morning), you might be sitting in a classroom alone for an hour on Monday before the professor shows up ;-).