In most of the USA, people will be moving their clocks one hour ahead on Sunday March 9. This is the beginning of the annual summer time reckoning known as "Daylight Savings Time". The custom has existed in most parts of the USA for many years, but the change normally occured on the last Sunday in April and continued until the last Sunday in October. Since 2007, the Daylight Savings Time period was expanded to always begin on the second Sunday in March and end on the first Sunday in November.
Beginning this Sunday, most people in the USA will be arising, going to work, and ending their work day one hour earlier. They will have an extra hour of daylight for outdoor activities every evening, but will be going to bed an hour earlier.
All airport schedules, train schedules, bus schedules and business hours will be changed to reflect the new times. It will take effect in nearly every state. Only Hawaii and parts of Arizona do not adhere to Daylight Savings Time.