Day Light Saving
In US, there is no consistency in the day and night span. Here the days are very short in winter, and very long in summers. So, the time is set in such a way, so as to make the maximum use of the day light. Hence, it is so called "Day Light Saving". It is changed twice every year.
Note (Change in DTS in 2007): Beginning in 2007, most of the U.S. will begin Daylight Savings Time at 2:00 a.m. on the second Sunday in March and revert to standard time on the first Sunday in November. In the U.S., each time zone switches at a different time.
- The clock is reset back in Fall Season, by one hour on the first Sunday of November at 2:00 A.M.
- Clock is once again reset forward in Spring Season, by one hour on the second Sunday of March at 2:00 A.M.
** Some parts of Arizona, Hawaii and Indiana are not affected by this day light saving change.
Want to know more about Day light saving and clock reset? checkout the following.