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Time getting reduced by 1 hour

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Operating Systems AIX Time getting reduced by 1 hour
# 1  
Old 09-12-2009
Time getting reduced by 1 hour
I am setting TZ=EST5EDT,M3.2.0/02:00:00,M11.1.0/02:00:00

Then Setting the date to Mar 14 01:40 EST

date 0314014010
Sun Mar 14 01:40:36 EDT 2010

Note that it show it EST. According to my TZ variable 01:40 Should be in EST only.
On executing date command once again it shows
date
Sun Mar 14 00:42:09 EST 2010

Note that EDT changed to EST and 01:40 reduced to 00:42


Can you help why it is happening..
I am using AIX6.1

Thanks in Advanceee
# 2  
Old 10-12-2009
Are you 100% sure this has nothing to do with the setting of the clock on the motherboard?
# 3  
Old 10-14-2009
May be you are in day saving mode.. DST mode ..

go to region and time settings through smitty and check it out.
# 4  
Old 10-14-2009
Or check with zdump.
# 5  
Old 10-15-2009
After a TZ change you MUST reboot for the changes to fully take effect.
Reboot and then test again please.
Let us know the results....
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