Most of the United States, Canada, and Mexico's northern border cities start Daylight Saving Time (DST) on Sunday, March 11, 2018. The clocks are set forward 1 hour from 02:00 (2 am) to 03:00 (3 am), local time.

Equinox on March 20, 2018

The March equinox happens on either March 19, 20, or 21 every year. Equinoxes and solstices are opposite on either side of the equator. The March equinox is the start of astronomical spring in the Northern Hemisphere, while in the Southern Hemisphere, it is the start of fall.