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[davidfertig]

Windows machines are patched by windows update. You must make sure windows update is running though. There are also application updates to Office etc.

http://support.microsoft.com/gp/cp_dst

\\tshpe2\support\Daylight Savings Time.doc

Please refer to Request# 060059

If you have any issues just contact support@tshinc.com


AIX machines need a change to /etc/environment

edit /etc/environment file

TZ=EST5EDT,M3.2.0,M11.1.0
#commented line below and added line above for DST
#TZ=EST5EDT
LANG=en_US


Setting your DST manually (to be used for out of support versions, such as AIX 4.3.3, or where the customer wants to update the system DST setting without applying any software fixes)

You can manually specify when to start and stop DST by setting the TZ environment variable in the /etc/environment file.

Examples for the four most common US timezones follows:

Timezone TZ Variable Setting
Eastern US TZ=EST5EDT,M3.2.0,M11.1.0
Central US TZ=CST6CDT,M3.2.0,M11.1.0
Mountain US TZ=MST7MDT,M3.2.0,M11.1.0
Pacific US TZ=PST8PDT,M3.2.0,M11.1.0


In the TZ variable example above, the first three characters represent the name of the timezone when not observing DST, such as "EST" for "Eastern Standard Time". The first numeral to appear reflects the number of hours behind Coordinated Universal Time (UTC); for example, EST is 5 hours behind UTC. The next three characters represent the name of the timezone when observing DST, such as "EDT" for "Eastern Daylight Time". Following the timezone names is a comma-separated rule for when the location begins and ends observance of DST:

"M3.2.0" means to begin observing DST starting in month 3 (March), week 2, and Day 0 (Sunday) = second Sunday in March. "M11.1.0" means to end observing DST on the first Sunday in November. If no DST rules are specified in the TZ variable, then the system will select the rules based on the US defaults. If a DST rule is manually specified, then the system defaults do not get used and the aforementioned APARs become unnecessary.

Since no time is specified, the default is 02:00:00 for the time change.

These correspond to the new US rules for 2007 and beyond. Once updated, the TZ environment variable will not need to be adjusted again (unless a new law changes the rules). Locations outside the US may need to set the rule to a different month or week number to reflect their own local DST observances.

More detail about setting the TZ variable can be found in the "AIX documentation for /etc/environment".

NOTE: Reboot the system before March 11, 2007 so all processes running will pick up the new time change.







Daniel Edwards
The Systems House, Inc.
1033 Rt. 46 East
Clifton NJ 07013
Phone: 973-777-8050 x 661
Fax: 973-777-3063
Email: dedwards@tshinc.com