How to determine whether the OS has the latest DST rules

Fang Lu fang.lu at us.ibm.com
Thu Nov 6 18:54:21 UTC 2008


Hello,

I am working on an issue related to Brazil timezone.  Our code reads the
DST rules from windows registry instead of tzdata.

My question is --  how do I determine whether the windows system has
applied the latest timezone DST rules from the following registry?  I don't
know how to interpret the binary data

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones





Any advice is appreciated.

Thanks,

Florence





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