[8023-10GEPON] FW: [csres] Changes to Daylight Savings --- Computer Update Required
All,
Below is an email from IT admin at UC Davis. As many of us will be
traveling to our Orlando meeting on March 11th, please be aware that new
Daylight Savings Time in US starts on that day. Don't be late to the
airport.
Regards,
Glen
-----Original Message-----
Because of energy saving legislation enacted in 2005, Daylight Savings
Time (DST) start and end dates have been changed. DST will start three
weeks earlier than in the past and end one week later. But why do you
care?
Computers determine what time it is in a two step process. Internally
the computer runs on Greenwich Mean Time (GMT) which is an absolute
worldwide regardless of time zone and DST. The computer then determines
the time to show you based on what time zone and DST settings you tell
it. All of our computers at UCD know that we are in the Pacific time
zone and know what dates to perform the DST offset based on descriptive
files in the computer. Those files need to be updated to reflect the
change in start and end date for DST this year.
If you are running a modern operating system that is being regularly
patched, then you are in good shape. Microsoft Windows XP Service Pack 2
gets patched automatically as does Apple Mac OS X 10.4.6 and later.
RedHat Enterprise 3 and 4, CentOS, Ubuntu, etc. have all released
updates that fix this problem --- so please make sure you have patched
your systems recently. You are doing that anyway because of the new
CyberSafety regulations, right?
...
Your computer needs to understand to "Spring Forward" at 2AM on Sunday
March 11. It should move the time to 3AM at that moment. If you come to
work on Monday morning and your computer says it is one hour earlier
than it actually is, then it did not update correctly.
--
Ken Jones
Director of Computing Services
University of California Davis, Department of Computer Science
1 Shields Ave, Engineering II Room 2063
Davis, CA 95616
www.cs.ucdavis.edu
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