Preparing for

1
Preparing for

• Daylight Saving Time Change

http//ksu.edu/infotech/summerhill
2
Introductions

• Richard Becker, Network Technologies Manager
• Julie Bell, EST/Unix Manager
• Dennis Devenney, COE Network Services Coordinator
• Tammy White, CTS Senior LAN Analyst

3
Daylight Saving Time (DST)

• What is it?
• Daylight Saving Time (DST) is a change in the
  standard time of each time zone.

4
Daylight Saving Time (DST)

• Why change?
• Energy Conservation
• Delaying sunrise and sunset tends to increase
  energy consumption in the morning and reduce it
  in the evening.
• 1975 United States Department of Transportation
  (DOT) study estimated that DST reduced the
  country's electricity usage by 1
• A Mexico study after the reintroduced DST in
  1996, estimated a national savings of 0.7 of
  national electric consumption and reduction of
  peak load by 500 MW.

5
Daylight Saving Time (DST)

• When does it happen?
• Uniform Time Act of 1966 - Standardized DST
• Begins last Sunday in April
• Ends last Sunday in October
• The "energy crisis" years
• 1974 DST Begins January 6th
• 1975 DST Begins February 23rd
• 1987 DST Adjustment
• Begins first Sunday in April.
• Ends last Sunday in October
• Energy Policy Act of 2005 - Extends DST by four
  weeks starting in 2007
• Begins second Sunday in March
• Ends first Sunday in November

6
Daylight Saving Time (DST)

• Why is it a big deal now?
• Digital Revolution
• Electronic devices are everywhere
• Computers, Cell phones, PDAs
• Networks are a part of everyday life
• Commerce, communications, etc

7
What is effected
Systems that use date/time stamps
Computers

• Operating Systems
• Unix
• Linux
• Windows
• Novell
• Mac
• etc.

• Applications
• E-mail
• Calendaring
• Web Applications
• JVM (Java)
• Databases
• Backup software
• etc.

8
What is effected
Systems that use date/time stamps
Other Devices

• Routers/Switches
• NTP appliances
• Time Alarm Clocks
• PBX systems
• IVR/ACD systems

• Phones
• Cell
• Land Line
• PDAs
• Digital Cameras
• Photo Copiers
• Fax Machines

9
What is effected

• and many, many more

10
What you need to do

• Identify possible vulnerabilities
• Check vendors websites
• Dont assume your systems will update properly
• Apply patches where available
• See
• http//ksu.edu/infotech/summerhill
• For DST Change Support Material

11
How K-State is preparing

• Networking Devices
• Just pointing to a NTP server for time isnt
  enough

12
How K-State is preparing

• Windows (Servers Workstations)
• Run Windows updates (KB931836)
• Manual update for Windows 2000 or older
  daylightsavingfix.exe
• Additional updates Exchange
• Novell
• NetWare
• GroupWise
• Sun Java JVM
• Java jar tzupdater.jar /u /v
• Update each instance of JVM on servers and
  workstations

13
How K-State is preparing

• Apple
• Run Software Updates
• Includes Mac OS Java for Mac updates

14
How K-State is preparing

• Unix/Linux, Central Services
• (Operating Systems, email, K-Calendar, Remedy)

zdump -v US/Central US/Central Sun Mar 11
075959 2007 UTC Sun Mar 11 015959 2007 CST
isdst0 US/Central Sun Mar 11 080000 2007 UTC
Sun Mar 11 030000 2007 CDT isdst1 US/Central
Sun Nov 4 065959 2007 UTC Sun Nov 4
015959 2007 CDT isdst1 US/Central Sun Nov 4
070000 2007 UTC Sun Nov 4 010000 2007 CST
isdst0 US/Central Sun Mar 9 075959 2008 UTC
Sun Mar 9 015959 2008 CST isdst0
15
How K-State is preparing

• Phone systems
• Cell phones