Next Sunday, March 13, we in California lose an hour. If my flight presently says LAX flight leaves at 9AM -- will that change to 8AM? 
The computer system will have automatically adjusted your flight time to allow for the time change, when it was assigned.
Cathy,
There is actually a very specific time where Daylight Savings Time begins and ends. In the United States, we have chosen 2am. At exactly 2am on March 17th, everyone is directed to move their clock ahead one hour to 3am. Folks in your area (including airlines) will then switch from PST (Pacific Standard Time) to PDT (Pacific Daylight Time). If you want to be official, you can wait around til 2am, but most people just move their clocks forward when they go to bed Saturday night. (And, if not then, when they get to church an hour late on Sunday.)
On 3/17/11, the hour of 2:00-2:59am disappears. The time jumps from 1:59am PST to 3:00am PDT. They'd never indicate that a plane will land (or depart) at 2:15am because that hour doesn't exist in either time zone. Instead, they'd call it by its new designation of 3:15am PDT.
(But don't you fret, because on 11/6 (the day that Daylight Savings Time ends), that missing hour will be restored because the hour of 1:00-1:59am will repeat itself -- once as PDT, then once again as PST. And balance will be restored to the universe!) If you have a plane that departs at 1:15am, you'd have to clarify which time zone they are using.
Of course, if this is all just too confusing, just look at DeniseM's answer!![]()
http://www.timeanddate.com/worldclock/clockchange.html?n=137
DST starts at 2:00 am Sunday, 01/13/2011, not 01/17/2011.
Actually it starts at 2:00 a.m. Sunday 03/13/2011.![]()
Cathy,
There is actually a very specific time where Daylight Savings Time begins and ends. In the United States, we have chosen 2am. At exactly 2am on March 17th, everyone is directed to move their clock ahead one hour to 3am. Folks in your area (including airlines) will then switch from PST (Pacific Standard Time) to PDT (Pacific Daylight Time). If you want to be official, you can wait around til 2am, but most people just move their clocks forward when they go to bed Saturday night. (And, if not then, when they get to church an hour late on Sunday.)
On 3/17/11, the hour of 2:00-2:59am disappears. The time jumps from 1:59am PST to 3:00am PDT. They'd never indicate that a plane will land (or depart) at 2:15am because that hour doesn't exist in either time zone. Instead, they'd call it by its new designation of 3:15am PDT.
(But don't you fret, because on 11/6 (the day that Daylight Savings Time ends), that missing hour will be restored because the hour of 1:00-1:59am will repeat itself -- once as PDT, then once again as PST. And balance will be restored to the universe!) If you have a plane that departs at 1:15am, you'd have to clarify which time zone they are using.
Of course, if this is all just too confusing, just look at DeniseM's answer!![]()
http://www.timeanddate.com/worldclock/clockchange.html?n=137
DST starts at 2:00 am Sunday, 03/13/2011, not 03/17/2011.